List of United Kingdom by-elections (1857–1868)

:See Resignation from the British House of Commons for more details.

Where the cause of by-election is given as "resignation" or "seeks re-election", this indicates that the incumbent was appointed on his own request to an "office of profit under the Crown", either the Steward of the Chiltern Hundreds, the Steward of the Manor of Northstead or the Steward of the Manor of Hempholme. These appointments are made as a constitutional device for leaving the House of Commons, whose Members are not permitted to resign.

{| class="wikitable"

|colspan=10|

|-

!By-election !! Date !! Former incumbent !! colspan=2 | Party !! Winner !! colspan=2 | Party !! Cause

|-bgcolor=lightblue

|Clitheroe

|13 July 1868

|Richard Fort

| {{Party name with colour|Liberal Party (UK)}}

|Ralph Assheton

| {{Party name with colour|Conservative Party (UK)}}

|Death

|-

|Stamford

|24 June 1868

|Viscount Ingestre

| {{Party name with colour|Conservative Party (UK)}}

|William Unwin Heygate

| {{Party name with colour|Conservative Party (UK)}}

|Succession to a peerage

|-

|Dublin City

|1 June 1868

|Benjamin Guinness

| {{Party name with colour|Conservative Party (UK)}}

|Arthur Guinness

| {{Party name with colour|Conservative Party (UK)}}

|Resignation

|-

|East Worcestershire

|1 June 1868

|Frederick Gough-Calthorpe

| {{Party name with colour|Liberal Party (UK)}}

|Hon. Charles Lyttelton

| {{Party name with colour|Liberal Party (UK)}}

|Succession to a peerage

|-

|Stamford

|4 May 1868

|Viscount Cranborne

| {{Party name with colour|Conservative Party (UK)}}

|Viscount Ingestre

| {{Party name with colour|Conservative Party (UK)}}

|Succession to a peerage

|-

|East Kent

|2 May 1868

|Brook Bridges

| {{Party name with colour|Conservative Party (UK)}}

|Edward Leigh Pemberton

| {{Party name with colour|Conservative Party (UK)}}

|Elevation to the peerage

|-

|Stirling Burghs

|30 April 1868

|Laurence Oliphant

| {{Party name with colour|Liberal Party (UK)}}

|John Ramsay

| {{Party name with colour|Liberal Party (UK)}}

|Resignation

|-bgcolor=lightblue

|Bristol

|30 April 1868

|Samuel Morton Peto

| {{Party name with colour|Liberal Party (UK)}}

|John William Miles

| {{Party name with colour|Conservative Party (UK)}}

|Resignation

|-

|South Lincolnshire

|29 April 1868

|John Trollope

| {{Party name with colour|Conservative Party (UK)}}

|William Earle Welby

| {{Party name with colour|Conservative Party (UK)}}

|Elevation to the peerage

|-

|Radnorshire

|28 April 1868

|John Walsh

| {{Party name with colour|Conservative Party (UK)}}

|Arthur Walsh

| {{Party name with colour|Conservative Party (UK)}}

|Elevation to the peerage

|-

|Leominster

|27 April 1868

|Arthur Walsh

| {{Party name with colour|Conservative Party (UK)}}

|Viscount Mahon

| {{Party name with colour|Conservative Party (UK)}}

|Resignation to contest Radnorshire

|-

|Grantham

|27 April 1868

|William Earle Welby

| {{Party name with colour|Conservative Party (UK)}}

|Edmund Turnor

| {{Party name with colour|Conservative Party (UK)}}

|Resignation to contest South Lincolnshire

|-bgcolor=lightblue

|Cockermouth

|27 April 1868

|John Steel

| {{Party name with colour|Liberal Party (UK)}}

|Andrew Green Thompson

| {{Party name with colour|Conservative Party (UK)}}

|Death

|-

|Wycombe

|11 April 1868

|Charles Carington

| {{Party name with colour|Liberal Party (UK)}}

|William Carington

| {{Party name with colour|Liberal Party (UK)}}

|Succession to a peerage

|-

|Launceston

|9 April 1868

|Alexander Henry Campbell

| {{Party name with colour|Conservative Party (UK)}}

|Henry Lopes

| {{Party name with colour|Conservative Party (UK)}}

|Resignation

|-

|Coventry

|26 March 1868

|Henry Jackson

| {{Party name with colour|Liberal Party (UK)}}

|Samuel Carter

| {{Party name with colour|Liberal Party (UK)}}

|Void election

|-

|Huddersfield

|20 March 1868

|Thomas Crosland

| {{Party name with colour|Liberal Party (UK)}}

|Edward Aldam Leatham

| {{Party name with colour|Liberal Party (UK)}}

|Death

|-

|North Northamptonshire

|7 March 1868

|George Ward Hunt

| {{Party name with colour|Conservative Party (UK)}}

|George Ward Hunt

| {{Party name with colour|Conservative Party (UK)}}

|Chancellor of the Exchequer

|-

|Argyllshire

|3 March 1868

|Alexander Struthers Finlay

| {{Party name with colour|Liberal Party (UK)}}

|Marquess of Lorne

| {{Party name with colour|Liberal Party (UK)}}

|Resignation

|-

|Cambridge University

|24 February 1868

|Charles Jasper Selwyn

| {{Party name with colour|Conservative Party (UK)}}

|Alexander Beresford Hope

| {{Party name with colour|Conservative Party (UK)}}

|Resignation (Judge of the Court of Appeal in Chancery)

|-bgcolor=FFCC66

|Stoke-upon-Trent

|20 February 1868

|Alexander Beresford Hope

| {{Party name with colour|Conservative Party (UK)}}

|George Melly

| {{Party name with colour|Liberal Party (UK)}}

|Resignation to contest Cambridge University

|-

|Helston

|19 February 1868

|William Brett

| {{Party name with colour|Conservative Party (UK)}}

|William Brett

| {{Party name with colour|Conservative Party (UK)}}

|Solicitor General for England and Wales

|-

|Kirkcudbright

|30 January 1868

|James Mackie

| {{Party name with colour|Liberal Party (UK)}}

|Wellwood Herries Maxwell

| {{Party name with colour|Liberal Party (UK)}}

|Death

|-

|Westmorland

|8 January 1868

|Henry Lowther

| {{Party name with colour|Conservative Party (UK)}}

|William Lowther

| {{Party name with colour|Conservative Party (UK)}}

|Death

|-

|Thetford

|2 December 1867

|Alexander Baring

| {{Party name with colour|Conservative Party (UK)}}

|Edward Gordon

| {{Party name with colour|Conservative Party (UK)}}

|Resignation

|-bgcolor=FFCC66

|South Leicestershire

|30 November 1867

|Charles William Packe

| {{Party name with colour|Conservative Party (UK)}}

|Thomas Paget

| {{Party name with colour|Liberal Party (UK)}}

|Death

|-

|Manchester

|27 November 1867

|Edward James

| {{Party name with colour|Liberal Party (UK)}}

|Jacob Bright

| {{Party name with colour|Liberal Party (UK)}}

|Death

|-bgcolor=lightblue

|Rutland

|23 November 1867

|Gilbert Heathcote

| {{Party name with colour|Liberal Party (UK)}}

|George Finch

| {{Party name with colour|Conservative Party (UK)}}

|Succession to a peerage

|-bgcolor=FFCC66

|Bradford

|16 October 1867

|Henry Wickham Wickham

| {{Party name with colour|Conservative Party (UK)}}

|Matthew William Thompson

| {{Party name with colour|Liberal Party (UK)}}

|Death

|-

|Galway County

|12 September 1867

|Lord Dunkellin

| {{Party name with colour|Liberal Party (UK)}}

|Viscount Burke

| {{Party name with colour|Liberal Party (UK)}}

|Death

|-

|Dublin University

|27 August 1867

|Hedges Eyre Chatterton

| {{Party name with colour|Conservative Party (UK)}}

|Robert Warren

| {{Party name with colour|Conservative Party (UK)}}

|Resignation (Vice-Chancellor of Ireland)

|-

|Stroud

|20 August 1867

|George Poulett Scrope

| {{Party name with colour|Liberal Party (UK)}}

|Henry Winterbotham

| {{Party name with colour|Liberal Party (UK)}}

|Resignation

|-

|Downpatrick

|5 August 1867

|David Stewart Ker

| {{Party name with colour|Conservative Party (UK)}}

|William Keown

| {{Party name with colour|Conservative Party (UK)}}

|Resignation

|-

|West Gloucestershire

|25 July 1867

|John Rolt

| {{Party name with colour|Conservative Party (UK)}}

|Edward Arthur Somerset

| {{Party name with colour|Conservative Party (UK)}}

|Resignation (Lord Justice of Appeal)

|-bgcolor=FFCC66

|Coventry

|23 July 1867

|Morgan Treherne

| {{Party name with colour|Conservative Party (UK)}}

|Henry Jackson

| {{Party name with colour|Liberal Party (UK)}}

|Death

|-

|Birmingham

|23 July 1867

|William Scholefield

| {{Party name with colour|Liberal Party (UK)}}

|George Dixon

| {{Party name with colour|Liberal Party (UK)}}

|Death

|-

|Andover

|22 July 1867

|John Burgess Karslake

| {{Party name with colour|Conservative Party (UK)}}

|John Burgess Karslake

| {{Party name with colour|Conservative Party (UK)}}

|Attorney General for England and Wales

|-

|Cambridge University

|22 July 1867

|Charles Jasper Selwyn

| {{Party name with colour|Conservative Party (UK)}}

|Charles Jasper Selwyn

| {{Party name with colour|Conservative Party (UK)}}

|Solicitor General for England and Wales

|-

|North Lancashire

|1 July 1867

|John Wilson-Patten

| {{Party name with colour|Conservative Party (UK)}}

|John Wilson-Patten

| {{Party name with colour|Conservative Party (UK)}}

|Chancellor of the Duchy of Lancaster

|-

|Weymouth and Melcombe Regis

|11 June 1867

|Henry Gridley

| {{Party name with colour|Liberal Party (UK)}}

|Henry Edwards

| {{Party name with colour|Liberal Party (UK)}}

|Resignation

|-

|Sutherland

|27 May 1867

|David Dundas

| {{Party name with colour|Liberal Party (UK)}}

|Lord Ronald Gower

| {{Party name with colour|Liberal Party (UK)}}

|Resignation

|-

|Oxford University

|20 May 1867

|Gathorne Hardy

| {{Party name with colour|Conservative Party (UK)}}

|Gathorne Hardy

| {{Party name with colour|Conservative Party (UK)}}

|Home Secretary

|-

|Middlesex

|15 April 1867

|Robert Culling Hanbury

| {{Party name with colour|Liberal Party (UK)}}

|Henry Labouchère

| {{Party name with colour|Liberal Party (UK)}}

|Death

|-bgcolor=FFCC66

|Galway Borough

|1 April 1867

|Michael Morris

| {{Party name with colour|Conservative Party (UK)}}

|George Morris

| {{Party name with colour|Liberal Party (UK)}}

|Resignation (Puisne Judge of the Court of Common Pleas in Ireland)

|-

|Dublin University

|30 March 1867

|Hedges Eyre Chatterton

| {{Party name with colour|Conservative Party (UK)}}

|Hedges Eyre Chatterton

| {{Party name with colour|Conservative Party (UK)}}

|Attorney-General for Ireland

|-

|Huntingdonshire

|25 March 1867

|Lord Robert Montagu

| {{Party name with colour|Conservative Party (UK)}}

|Lord Robert Montagu

| {{Party name with colour|Conservative Party (UK)}}

|Vice-President of the Committee on Education

|-

|Tyrone

|21 March 1867

|Henry Lowry-Corry

| {{Party name with colour|Conservative Party (UK)}}

|Henry Lowry-Corry

| {{Party name with colour|Conservative Party (UK)}}

|First Lord of the Admiralty

|-

|North Devon

|18 March 1867

|Stafford Northcote

| {{Party name with colour|Conservative Party (UK)}}

|Stafford Northcote

| {{Party name with colour|Conservative Party (UK)}}

|Secretary of State for India

|-

|Boston

|16 March 1867

|Meaburn Staniland

| {{Party name with colour|Liberal Party (UK)}}

|Thomas Parry

| {{Party name with colour|Liberal Party (UK)}}

|Resignation

|-

|North Shropshire

|14 March 1867

|Adelbert Brownlow-Cust

| {{Party name with colour|Conservative Party (UK)}}

|Viscount Newport

| {{Party name with colour|Conservative Party (UK)}}

|Succession to a peerage

|-

|Droitwich

|13 March 1867

|John Pakington

| {{Party name with colour|Conservative Party (UK)}}

|John Pakington

| {{Party name with colour|Conservative Party (UK)}}

|Secretary of State for War

|-

|South Shropshire

|8 March 1867

|Percy Egerton Herbert

| {{Party name with colour|Conservative Party (UK)}}

|Percy Egerton Herbert

| {{Party name with colour|Conservative Party (UK)}}

|Treasurer of the Household

|-

|North Riding of Yorkshire

|4 March 1867

|William Duncombe

| {{Party name with colour|Conservative Party (UK)}}

|Octavius Duncombe

| {{Party name with colour|Conservative Party (UK)}}

|Succession to a peerage

|-

|-bgcolor= lightblue

|Cork County

|23 February 1867

|George Richard Barry

| {{Party name with colour|Liberal Party (UK)}}

|Arthur Smith-Barry

| {{Party name with colour|Conservative Party (UK)}}

|Death

|-

|East Suffolk

|20 February 1867

|Sir Edward Kerrison

| {{Party name with colour|Conservative Party (UK)}}

|Frederick Snowdon Corrance

| {{Party name with colour|Conservative Party (UK)}}

|Resignation

|-

|Colchester

|15 February 1867

|Taverner John Miller

| {{Party name with colour|Conservative Party (UK)}}

|Edward Karslake

| {{Party name with colour|Conservative Party (UK)}}

|Resignation (Chief Justice of the Common Pleas)

|-

|North Northamptonshire

|13 February 1867

|Lord Burghley

| {{Party name with colour|Conservative Party (UK)}}

|Sackville Stopford

| {{Party name with colour|Conservative Party (UK)}}

|Succession to a peerage

|-

|Galway Borough

|12 February 1867

|Michael Morris

| {{Party name with colour|Conservative Party (UK)}}

|Michael Morris

| {{Party name with colour|Conservative Party (UK)}}

|Attorney General for Ireland

|-

|Dublin University

|12 February 1867

|John Edward Walsh

| {{Party name with colour|Conservative Party (UK)}}

|Hedges Eyre Chatterton

| {{Party name with colour|Conservative Party (UK)}}

|Resignation (Master of the Rolls in Ireland)

|-

|Andover

|11 February 1867

|William Henry Humphery

| {{Party name with colour|Conservative Party (UK)}}

|John Burgess Karslake

| {{Party name with colour|Conservative Party (UK)}}

|Resignation

|-

|Armagh City

|30 January 1867

|Stearne Ball Miller

| {{Party name with colour|Conservative Party (UK)}}

|John Vance

| {{Party name with colour|Conservative Party (UK)}}

|Resignation (Judge in Bankruptcy in Ireland)

|-bgcolor=FFCC66

|County Waterford

|31 December 1866

|Earl of Tyrone

| {{Party name with colour|Conservative Party (UK)}}

|Edmond de la Poer

| {{Party name with colour|Liberal Party (UK)}}

|Succession to a peerage

|-

|Guildford

|17 December 1866

|William Bovill

| {{Party name with colour|Conservative Party (UK)}}

|Richard Garth

| {{Party name with colour|Conservative Party (UK)}}

|Resignation (Chief Justice of the Common Pleas)

|-

|Pembrokeshire

|26 November 1866

|George Lort Phillips

| {{Party name with colour|Conservative Party (UK)}}

|James Bevan Bowen

| {{Party name with colour|Conservative Party (UK)}}

|Death

|-

|Belfast

|22 November 1866

|Hugh Cairns

| {{Party name with colour|Conservative Party (UK)}}

|Charles Lanyon

| {{Party name with colour|Conservative Party (UK)}}

|Resignation (Lord Justice of Appeal of England and Wales)

|-

|West Gloucestershire

|15 November 1866

|John Rolt

| {{Party name with colour|Conservative Party (UK)}}

|John Rolt

| {{Party name with colour|Conservative Party (UK)}}

|Attorney General for England and Wales

|-

|County Wexford

|15 November 1866

|John George

| {{Party name with colour|Conservative Party (UK)}}

|Arthur MacMorrough Kavanagh

| {{Party name with colour|Conservative Party (UK)}}

|Resignation (Judge in Bankruptcy in Ireland)

|-

|Tipperary

|22 October 1866

|John Blake Dillon

| {{Party name with colour|Liberal Party (UK)}}

|Charles William White

| {{Party name with colour|Liberal Party (UK)}}

|Death

|-

|Penryn and Falmouth

|15 October 1866

|Thomas Baring

| {{Party name with colour|Liberal Party (UK)}}

|Jervoise Smith

| {{Party name with colour|Liberal Party (UK)}}

|Succession to a peerage

|-bgcolor=lightblue

|Brecon

|3 October 1866

|Earl of Brecknock

| {{Party name with colour|Liberal Party (UK)}}

|Howel Gwyn

| {{Party name with colour|Conservative Party (UK)}}

|Succession to a peerage

|-

|North Shropshire

|17 August 1866

|Charles Cust

| {{Party name with colour|Conservative Party (UK)}}

|Adelbert Brownlow-Cust

| {{Party name with colour|Conservative Party (UK)}}

|Resignation

|-

|Caenarvonshire

|14 August 1866

|Edward Douglas-Pennant

| {{Party name with colour|Conservative Party (UK)}}

|George Douglas-Pennant

| {{Party name with colour|Conservative Party (UK)}}

|Elevation to the peerage

|-

|Abingdon

|6 August 1866

|Charles Lindsay

| {{Party name with colour|Conservative Party (UK)}}

|Charles Lindsay

| {{Party name with colour|Conservative Party (UK)}}

|Groom in Waiting

|-bgcolor=lightblue

|Galway Borough

|2 August 1866

|Michael Morris

| {{Party name with colour|Liberal Party (UK)}}

|Michael Morris

| {{Party name with colour|Conservative Party (UK)}}

|Solicitor General for Ireland

|-

|Dublin University

|30 July 1866

|James Whiteside

| {{Party name with colour|Conservative Party (UK)}}

|John Edward Walsh

| {{Party name with colour|Conservative Party (UK)}}

|Resignation (Lord Chief Justice of Ireland)

|-

|Eye

|27 July 1866

|Edward Kerrison

| {{Party name with colour|Conservative Party (UK)}}

|George Barrington

| {{Party name with colour|Conservative Party (UK)}}

|Resignation to contest East Suffolk

|-

|rowspan=2|East Suffolk

|rowspan=2|25 July 1866

|The Lord Henniker

| {{Party name with colour|Conservative Party (UK)}}

|John Henniker-Major

| {{Party name with colour|Conservative Party (UK)}}

|Elevation to the peerage

|-

|Fitzroy Kelly

| {{Party name with colour|Conservative Party (UK)}}

|Edward Kerrison

| {{Party name with colour|Conservative Party (UK)}}

|Resignation (Lord Chief Baron of the Exchequer)

|-

|Peeblesshire

|24 July 1866

|Graham Graham-Montgomery

| {{Party name with colour|Conservative Party (UK)}}

|Graham Graham-Montgomery

| {{Party name with colour|Conservative Party (UK)}}

|Lord Commissioner of the Treasury

|-bgcolor=FFCC66

|Petersfield

|23 July 1866

|William Jolliffe

| {{Party name with colour|Conservative Party (UK)}}

|William Nicholson

| {{Party name with colour|Liberal Party (UK)}}

|Elevation to the peerage

|-

|Hertfordshire

|23 July 1866

|Edward Bulwer-Lytton

| {{Party name with colour|Conservative Party (UK)}}

|Abel Smith

| {{Party name with colour|Conservative Party (UK)}}

|Elevation to the peerage

|-

|Bridgnorth

|21 July 1866

|Henry Whitmore

| {{Party name with colour|Conservative Party (UK)}}

|Henry Whitmore

| {{Party name with colour|Conservative Party (UK)}}

|Lord Commissioner of the Treasury

|-

|Tyrone

|20 July 1866

|Lord Claud Hamilton

| {{Party name with colour|Conservative Party (UK)}}

|Lord Claud Hamilton

| {{Party name with colour|Conservative Party (UK)}}

|Vice-Chamberlain of the Household

|-

|Tyrone

|18 July 1866

|Henry Lowry-Corry

| {{Party name with colour|Conservative Party (UK)}}

|Henry Lowry-Corry

| {{Party name with colour|Conservative Party (UK)}}

|Vice-President of the Committee of the Council on Education

|-

|Cambridgeshire

|17 July 1866

|Viscount Royston

| {{Party name with colour|Conservative Party (UK)}}

|Viscount Royston

| {{Party name with colour|Conservative Party (UK)}}

|Comptroller of the Household

|-

|Antrim

|17 July 1866

|George Henry Seymour

| {{Party name with colour|Conservative Party (UK)}}

|George Henry Seymour

| {{Party name with colour|Conservative Party (UK)}}

|Third Naval Lord

|-

|North Essex

|16 July 1866

|Charles Du Cane

| {{Party name with colour|Conservative Party (UK)}}

|Charles Du Cane

| {{Party name with colour|Conservative Party (UK)}}

|Civil Lord of the Admiralty

|-

|Rutlandshire

|14 July 1866

|Gerard Noel

| {{Party name with colour|Conservative Party (UK)}}

|Gerard Noel

| {{Party name with colour|Conservative Party (UK)}}

|Lord Commissioner of the Treasury

|-

|North Northamptonshire

|14 July 1866

|Lord Burghley

| {{Party name with colour|Conservative Party (UK)}}

|Lord Burghley

| {{Party name with colour|Conservative Party (UK)}}

|Treasurer of the Household

|-

|North Leicestershire

|14 July 1866

|Lord John Manners

| {{Party name with colour|Conservative Party (UK)}}

|Lord John Manners

| {{Party name with colour|Conservative Party (UK)}}

|First Commissioner of Works

|-

|North Devon

|14 July 1866

|Stafford Northcote

| {{Party name with colour|Conservative Party (UK)}}

|Stafford Northcote

| {{Party name with colour|Conservative Party (UK)}}

|President of the Board of Trade

|-

|New Shoreham

|14 July 1866

|Stephen Cave

| {{Party name with colour|Conservative Party (UK)}}

|Stephen Cave

| {{Party name with colour|Conservative Party (UK)}}

|Paymaster General and Vice-President of the Board of Trade

|-

|Belfast

|13 July 1866

|Hugh Cairns

| {{Party name with colour|Conservative Party (UK)}}

|Hugh Cairns

| {{Party name with colour|Conservative Party (UK)}}

|Attorney General for England and Wales

|-

|Buckinghamshire

|13 July 1866

|Benjamin Disraeli

| {{Party name with colour|Conservative Party (UK)}}

|Benjamin Disraeli

| {{Party name with colour|Conservative Party (UK)}}

|Chancellor of the Exchequer

|-

|Oxford University

|12 July 1866

|Gathorne Hardy

| {{Party name with colour|Conservative Party (UK)}}

|Gathorne Hardy

| {{Party name with colour|Conservative Party (UK)}}

|President of the Poor Law Board

|-

|rowspan=2|Stamford

|rowspan=2|12 July 1866

|Viscount Cranborne

| {{Party name with colour|Conservative Party (UK)}}

|Viscount Cranborne

| {{Party name with colour|Conservative Party (UK)}}

|Secretary of State for India

|-

|Sir John Dalrymple-Hay

| {{Party name with colour|Conservative Party (UK)}}

|Sir John Dalrymple-Hay

| {{Party name with colour|Conservative Party (UK)}}

|Fourth Naval Lord

|-bgcolor=FFCC66

|Bridgewater

|12 July 1866

|George Patton

| {{Party name with colour|Conservative Party (UK)}}

|Philip Vanderbyl

| {{Party name with colour|Liberal Party (UK)}}

|Lord Advocate

|-

|Cambridge University

|11 July 1866

|Spencer Horatio Walpole

| {{Party name with colour|Conservative Party (UK)}}

|Spencer Horatio Walpole

| {{Party name with colour|Conservative Party (UK)}}

|Home Secretary

|-

|King's Lynn

|11 July 1866

|Lord Stanley

| {{Party name with colour|Conservative Party (UK)}}

|Lord Stanley

| {{Party name with colour|Conservative Party (UK)}}

|Foreign Secretary

|-

|Huntingdon

|11 July 1866

|Jonathan Peel

| {{Party name with colour|Conservative Party (UK)}}

|Jonathan Peel

| {{Party name with colour|Conservative Party (UK)}}

|Secretary of State for War

|-

|Guildford

|11 July 1866

|William Bovill

| {{Party name with colour|Conservative Party (UK)}}

|William Bovill

| {{Party name with colour|Conservative Party (UK)}}

|Solicitor General for England and Wales

|-

|Durham

|11 July 1866

|John Mowbray

| {{Party name with colour|Conservative Party (UK)}}

|John Mowbray

| {{Party name with colour|Conservative Party (UK)}}

|Judge Advocate General

|-

|Droitwich

|11 July 1866

|John Pakington

| {{Party name with colour|Conservative Party (UK)}}

|John Pakington

| {{Party name with colour|Conservative Party (UK)}}

|First Lord of the Admiralty

|-

|Cockermouth

|11 July 1866

|Lord Naas

| {{Party name with colour|Conservative Party (UK)}}

|Lord Naas

| {{Party name with colour|Conservative Party (UK)}}

|Chief Secretary for Ireland

|-

|Hertford

|30 June 1866

|Walter Townshend-Farquhar

| {{Party name with colour|Conservative Party (UK)}}

|Robert Dimsdale

| {{Party name with colour|Conservative Party (UK)}}

|Death

|-

|South Nottinghamshire

|18 June 1866

|Lord Stanhope

| {{Party name with colour|Conservative Party (UK)}}

|Thomas Thoroton-Hildyard

| {{Party name with colour|Conservative Party (UK)}}

|Succession to a peerage

|-

|Bridgewater

|7 June 1866

|Henry Westropp

| {{Party name with colour|Conservative Party (UK)}}

|George Patton

| {{Party name with colour|Conservative Party (UK)}}

|Void election

|-

|County Waterford

|7 June 1866

|John Esmonde

| {{Party name with colour|Liberal Party (UK)}}

|John Esmonde

| {{Party name with colour|Liberal Party (UK)}}

|Lord Commissioner of the Treasury

|-

|Winchester

|4 June 1866

|John Bonham-Carter

| {{Party name with colour|Liberal Party (UK)}}

|John Bonham-Carter

| {{Party name with colour|Liberal Party (UK)}}

|Lord Commissioner of the Treasury

|-bgcolor=FFCC66

|rowspan=2|Devonport

|rowspan=2|22 May 1866

|William Ferrand

| {{Party name with colour|Conservative Party (UK)}}

|Lord Eliot

| {{Party name with colour|Liberal Party (UK)}}

|Void election

|-bgcolor=FFCC66

|John Fleming

| {{Party name with colour|Conservative Party (UK)}}

|Montague Chambers

| {{Party name with colour|Liberal Party (UK)}}

|Void election

|-

|Kildare

|21 May 1866

|Lord Otho FitzGerald

| {{Party name with colour|Liberal Party (UK)}}

|Lord Otho FitzGerald

| {{Party name with colour|Liberal Party (UK)}}

|Treasurer of the Household

|- bgcolor=FFCC66

|Aberdeenshire

|15 May 1866

|William Leslie

| {{Party name with colour|Conservative Party (UK)}}

|William Dingwall Fordyce

| {{Party name with colour|Liberal Party (UK)}}

|Resignation

|-

|rowspan=2|Nottingham

|rowspan=2|11 May 1866

|Robert Juckes Clifton

| {{Party name with colour|Liberal Party (UK)}}

|Ralph Bernal Osborne

| {{Party name with colour|Liberal Party (UK)}}

|Void election

|-

|Samuel Morley

| {{Party name with colour|Liberal Party (UK)}}

|Viscount Amberley

| {{Party name with colour|Liberal Party (UK)}}

|Void election

|-

|Northallerton

|10 May 1866

|Charles Mills

| {{Party name with colour|Conservative Party (UK)}}

|Egremont Lascelles

| {{Party name with colour|Conservative Party (UK)}}

|Void election

|-

|North Devon

|9 May 1866

|Charles Trefusis

| {{Party name with colour|Conservative Party (UK)}}

|Stafford Northcote

| {{Party name with colour|Conservative Party (UK)}}

|Succession to a peerage

|-

|rowspan=2|Windsor

|rowspan=2|9 May 1866

|Sir Henry Hoare

| {{Party name with colour|Liberal Party (UK)}}

|Charles Edwards

| {{Party name with colour|Liberal Party (UK)}}

|Void election

|-

|Henry Labouchère

| {{Party name with colour|Liberal Party (UK)}}

|Roger Eykyn

| {{Party name with colour|Liberal Party (UK)}}

|Void election

|-

|Stamford

|8 May 1866

|Stafford Northcote

| {{Party name with colour|Conservative Party (UK)}}

|Sir John Dalrymple-Hay

| {{Party name with colour|Conservative Party (UK)}}

|Resignation to Contest North Devon

|-bgcolor=lightblue

|Sandwich

|8 May 1866

|Lord Clarence Paget

| {{Party name with colour|Liberal Party (UK)}}

|Charles Capper

| {{Party name with colour|Conservative Party (UK)}}

|Resignation

|-

|Reading

|5 May 1866

|George Shaw-Lefevre

| {{Party name with colour|Liberal Party (UK)}}

|George Shaw-Lefevre

| {{Party name with colour|Liberal Party (UK)}}

|Civil Lord of the Admiralty

|-

|rowspan=2|Helston

|rowspan=2|1 May 1866Both Robert Campbell and William Brett polled exactly the same number of votes. The mayor, as returning officer, gave his casting vote for the Liberal candidate Robert Campbell. As this vote was given after four o'clock, however, an appeal was lodged, and the House of Commons declared that the returning officer had no right to a casting vote, and that he should have returned the names of both tied candidates. On scrutiny of the votes, one vote was struck off Campbell's total, and the Conservative candidate William Brett declared duly elected.

|Adolphus William Young

| {{Party name with colour|Liberal Party (UK)}}

|Robert Campbell

| {{Party name with colour|Liberal Party (UK)}}

|Void election

|- bgcolor=lightblue

|Robert Campbell

| {{Party name with colour|Liberal Party (UK)}}

|William Brett

| {{Party name with colour|Conservative Party (UK)}}

|By-election result reversed on petition

|-

|Cambridge

|24 April 1866

|William Forsyth

| {{Party name with colour|Conservative Party (UK)}}

|John Eldon Gorst

| {{Party name with colour|Conservative Party (UK)}}

|Void election

|-

|Ripon

|28 March 1866An uncontested by-election.

|Lord John Hay

| {{Party name with colour|Liberal Party (UK)}}

|Lord John Hay

| {{Party name with colour|Liberal Party (UK)}}

|Fifth Naval Lord

|-

|Honiton

|28 March 1866An uncontested by-election.

|Frederick Goldsmid

| {{Party name with colour|Liberal Party (UK)}}

|Julian Goldsmid

| {{Party name with colour|Liberal Party (UK)}}

|Death

|-

|Wigan

|27 March 1866

|James Alexander Lindsay

| {{Party name with colour|Conservative Party (UK)}}

|Nathaniel Eckersley

| {{Party name with colour|Conservative Party (UK)}}

|Resignation

|-

|Western Worcestershire

|24 March 1866An uncontested by-election.

|Frederick Lygon

| {{Party name with colour|Conservative Party (UK)}}

|William Edward Dowdeswell

| {{Party name with colour|Conservative Party (UK)}}

|Succession to a peerage

|-

|County Louth

|22 March 1866An uncontested by-election.

|Chichester Parkinson-Fortescue

| {{Party name with colour|Liberal Party (UK)}}

|Chichester Parkinson-Fortescue

| {{Party name with colour|Liberal Party (UK)}}

|Chief Secretary for Ireland

|-

|Tewkesbury

|20 March 1866

|William Edward Dowdeswell

| {{Party name with colour|Conservative Party (UK)}}

|Sir Edmund Lechmere

| {{Party name with colour|Conservative Party (UK)}}

|Resignation to contest Western Worcestershire

|-

|Kerry

|16 March 1866An uncontested by-election.

|Henry Arthur Herbert

| {{Party name with colour|Liberal Party (UK)}}

|Henry Arthur Herbert

| {{Party name with colour|Liberal Party (UK)}}

|Death

|-

|Richmond

|6 March 1866

|John Dundas

| {{Party name with colour|Liberal Party (UK)}}

|Marmaduke Wyvill

| {{Party name with colour|Liberal Party (UK)}}

|Death

|-

|County Limerick

|1 March 1866An uncontested by-election.

|William Monsell

| {{Party name with colour|Liberal Party (UK)}}

|William Monsell

| {{Party name with colour|Liberal Party (UK)}}

|Vice-President of the Board of Trade and Paymaster General

|-

|North Lancashire

|28 February 1866An uncontested by-election.

|Marquess of Hartington

| {{Party name with colour|Liberal Party (UK)}}

|Marquess of Hartington

| {{Party name with colour|Liberal Party (UK)}}

|Secretary of State for War

|-

|Tiverton

|28 February 1866

|The Viscount Palmerston

| {{Party name with colour|Liberal Party (UK)}}

|George Denman

| {{Party name with colour|Liberal Party (UK)}}

|Death

|-

|Sunderland

|28 February 1866

|Henry Fenwick

| {{Party name with colour|Liberal Party (UK)}}

|John Candlish

| {{Party name with colour|Liberal Party (UK)}}

|Civil Lord of the Admiralty

|-

|Brecon

|27 February 1866An uncontested by-election.

|John Lloyd Vaughan Watkins

| {{Party name with colour|Liberal Party (UK)}}

|Earl of Brecknock

| {{Party name with colour|Liberal Party (UK)}}

|Death

|-

|Ripon

|26 February 1866An uncontested by-election.

|Sir Charles Wood

| {{Party name with colour|Liberal Party (UK)}}

|Lord John Hay

| {{Party name with colour|Liberal Party (UK)}}

|Resignation pending elevation to the peerage

|-

|Leominster

|26 February 1866An uncontested by-election.

|Gathorne Hardy

| {{Party name with colour|Conservative Party (UK)}}

|Richard Arkwright

| {{Party name with colour|Conservative Party (UK)}}

|Double election, chose to sit for Oxford University

|-

|City of London

|26 February 1866An uncontested by-election.

|George Joachim Goschen

| {{Party name with colour|Liberal Party (UK)}}

|George Joachim Goschen

| {{Party name with colour|Liberal Party (UK)}}

|Chancellor of the Duchy of LancasterSeat vacated on appointment to the office noted.

|-

|colspan=10 |

|-

!By-election !! Date !! Former incumbent !! colspan=2 | Party !! Winner !! colspan=2 | Party !! Cause

|-

|Devonport

|22 June 1865

|Arthur William Buller

| {{Party name with colour|Liberal Party (UK)}}

|Thomas Brassey

| {{Party name with colour|Liberal Party (UK)}}

|Resignation to contest Liskeard

|-

|Liskeard

|21 June 1865

|Ralph Bernal Osborne

| {{Party name with colour|Liberal Party (UK)}}

|Arthur William Buller

| {{Party name with colour|Liberal Party (UK)}}

|Resignation

|-bgcolor=lightblue

|Coventry

|21 June 1865

|Joseph Paxton

| {{Party name with colour|Liberal Party (UK)}}

|Henry Eaton

| {{Party name with colour|Conservative Party (UK)}}

|Death

|-

|Lambeth

|9 May 1865

|William Williams

| {{Party name with colour|Liberal Party (UK)}}

|James Lawrence

| {{Party name with colour|Liberal Party (UK)}}

|Death

|-

|Clackmannanshire and Kinross-shire

|20 April 1865

|William Patrick Adam

| {{Party name with colour|Liberal Party (UK)}}

|William Patrick Adam

| {{Party name with colour|Liberal Party (UK)}}

|Lord of the Treasury

|-

|Wigtown Burghs

|15 April 1865

|William Dunbar

| {{Party name with colour|Liberal Party (UK)}}

|George Young

| {{Party name with colour|Liberal Party (UK)}}

|Resignation (Commissioner for Auditing the Public Accounts)

|-

|Rochdale

|15 April 1865

|Richard Cobden

| {{Party name with colour|Liberal Party (UK)}}

|Thomas Bayley Potter

| {{Party name with colour|Liberal Party (UK)}}

|Death

|-

|Louth

|15 April 1865

|Richard Montesquieu Bellew

| {{Party name with colour|Liberal Party (UK)}}

|Tristram Kennedy

| {{Party name with colour|Liberal Party (UK)}}

|Resignation (Commissioner of Poor Laws in Ireland)

|-

|South Shropshire

|12 April 1865

|Viscount Newport

| {{Party name with colour|Conservative Party (UK)}}

|Percy Egerton Herbert

| {{Party name with colour|Conservative Party (UK)}}

|Succession to a peerage

|-

|Evesham

|4 April 1865

|Henry Willoughby

| {{Party name with colour|Conservative Party (UK)}}

|James Bourne

| {{Party name with colour|Conservative Party (UK)}}

|Death

|-

|North Devon

|1 April 1865

|James Wentworth Buller

| {{Party name with colour|Liberal Party (UK)}}

|Thomas Dyke Acland

| {{Party name with colour|Liberal Party (UK)}}

|Death

|-bgcolor=FFCC66

|North Wiltshire

|20 March 1865

|Thomas H. Sotheron-Estcourt

| {{Party name with colour|Conservative Party (UK)}}

|Lord Charles Bruce

| {{Party name with colour|Liberal Party (UK)}}

|Resignation

|-

|Tipperary

|24 February 1865

|Daniel O'Donoghue

| {{Party name with colour|Liberal Party (UK)}}

|Charles Moore

| {{Party name with colour|Liberal Party (UK)}}

|Resignation to contest Tralee

|-

|Lancaster

|20 February 1865

|Samuel Gregson

| {{Party name with colour|Liberal Party (UK)}}

|Henry Schneider

| {{Party name with colour|Liberal Party (UK)}}

|Death

|-

|Truro

|14 February 1865

|Montague Edward Smith

| {{Party name with colour|Conservative Party (UK)}}

|Frederick Williams

| {{Party name with colour|Conservative Party (UK)}}

|Resignation (Judge of the Court of Common Pleas)

|-

|Tralee

|14 February 1865

|Thomas O'Hagan

| {{Party name with colour|Liberal Party (UK)}}

|Daniel O'Donoghue

| {{Party name with colour|Liberal Party (UK)}}

|Resignation (Judge of the Court of Common Pleas in Ireland)

|-

|Cork City

|14 February 1865

|Francis Lyons

| {{Party name with colour|Liberal Party (UK)}}

|Nicholas Daniel Murphy

| {{Party name with colour|Liberal Party (UK)}}

|Resignation

|-

|Salford

|13 February 1865

|William Nathaniel Massey

| {{Party name with colour|Liberal Party (UK)}}

|John Cheetham

| {{Party name with colour|Liberal Party (UK)}}

|Resignation (Council of India)

|-

|Buteshire

|6 February 1865

|David Mure

| {{Party name with colour|Conservative Party (UK)}}

|George Boyle

| {{Party name with colour|Conservative Party (UK)}}

|Resignation (Senator of the College of Justice)

|-

|North Warwickshire

|13 December 1864

|Richard Spooner

| {{Party name with colour|Conservative Party (UK)}}

|William Bromley-Davenport

| {{Party name with colour|Conservative Party (UK)}}

|Death

|-

|West Suffolk

|8 December 1864

|Earl Jermyn

| {{Party name with colour|Conservative Party (UK)}}

|Lord Augustus Hervey

| {{Party name with colour|Conservative Party (UK)}}

|Succession to a peerage

|-

|Carmarthen Boroughs

|31 October 1864

|David Morris

| {{Party name with colour|Liberal Party (UK)}}

|William Morris

| {{Party name with colour|Liberal Party (UK)}}

|Death

|-

|Hastings

|6 October 1864

|Lord Harry George Vane

| {{Party name with colour|Liberal Party (UK)}}

|George Waldegrave-Leslie

| {{Party name with colour|Liberal Party (UK)}}

|Succession to a peerage

|-bgcolor=lightblue

|Exeter

|4 August 1864

|Edward Divett

| {{Party name with colour|Liberal Party (UK)}}

|Lord Courtenay

| {{Party name with colour|Conservative Party (UK)}}

|Death

|-

|East Gloucestershire

|12 July 1864

|Christopher William Codrington

| {{Party name with colour|Conservative Party (UK)}}

|Michael Hicks Beach

| {{Party name with colour|Conservative Party (UK)}}

|Death

|-bgcolor=FFCC66

|North Durham

|28 June 1864

|Lord Adolphus Vane-Tempest

| {{Party name with colour|Conservative Party (UK)}}

|Hedworth Williamson

| {{Party name with colour|Liberal Party (UK)}}

|Death

|-

|Gloucester

|25 May 1864

|John Joseph Powell

| {{Party name with colour|Liberal Party (UK)}}

|John Joseph Powell

| {{Party name with colour|Liberal Party (UK)}}

|Recorder of Wolverhampton

|-

|Stockport

|9 May 1864

|James Kershaw

| {{Party name with colour|Liberal Party (UK)}}

|Edward Watkin

| {{Party name with colour|Liberal Party (UK)}}

|Death

|-

|Merthyr Tydfil

|25 April 1864

|Henry Austin Bruce

| {{Party name with colour|Liberal Party (UK)}}

|Henry Austin Bruce

| {{Party name with colour|Liberal Party (UK)}}

|Vice-President of the Committee on Education

|-

|Pontefract

|20 April 1864

|Hugh Childers

| {{Party name with colour|Liberal Party (UK)}}

|Hugh Childers

| {{Party name with colour|Liberal Party (UK)}}

|Civil Lord of the Admiralty

|-

|Fife

|19 April 1864

|James Hay Erskine Wemyss

| {{Party name with colour|Liberal Party (UK)}}

|Robert Anstruther

| {{Party name with colour|Liberal Party (UK)}}

|Death

|-

|Devizes

|18 April 1864

|William Addington

| {{Party name with colour|Conservative Party (UK)}}

|Thomas Bateson

| {{Party name with colour|Conservative Party (UK)}}

|Succession to a peerage

|-bgcolor=FFCC66

|Lancaster

|13 April 1864

|William James Garnett

| {{Party name with colour|Conservative Party (UK)}}

|Edward Matthew Fenwick

| {{Party name with colour|Liberal Party (UK)}}

|Resignation

|-

|Oxford

|9 April 1864

|Edward Cardwell

| {{Party name with colour|Liberal Party (UK)}}

|Edward Cardwell

| {{Party name with colour|Liberal Party (UK)}}

|Secretary of State for the Colonies

|-

|County Armagh

|23 March 1864

|Maxwell Charles Close

| {{Party name with colour|Conservative Party (UK)}}

|James Stronge

| {{Party name with colour|Conservative Party (UK)}}

|Resignation

|-bgcolor=lightblue

|Hertfordshire

|14 March 1864

|Christopher William Puller

| {{Party name with colour|Liberal Party (UK)}}

|Henry Surtees

| {{Party name with colour|Conservative Party (UK)}}

|Death

|-

|Dorset

|27 February 1864

|Henry Ker Seymer

| {{Party name with colour|Conservative Party (UK)}}

|John Floyer

| {{Party name with colour|Conservative Party (UK)}}

|Resignation

|-bgcolor=lightblue

|Brighton

|16 February 1864

|William Coningham

| {{Party name with colour|Liberal Party (UK)}}

|Henry Moor

| {{Party name with colour|Conservative Party (UK)}}

|Resignation

|-

|Winchester

|10 February 1864

|James Buller East

| {{Party name with colour|Conservative Party (UK)}}

|Thomas Willis Fleming

| {{Party name with colour|Conservative Party (UK)}}

|Resignation

|-

|Tewkesbury

|9 February 1864

|Frederick Lygon

| {{Party name with colour|Conservative Party (UK)}}

|John Yorke

| {{Party name with colour|Conservative Party (UK)}}

|Resignation to contest West Worcestershire.

|-

|Durham City

|9 February 1864

|William Atherton

| {{Party name with colour|Liberal Party (UK)}}

|John Henderson

| {{Party name with colour|Liberal Party (UK)}}

|Death

|-bgcolor=lightblue

|Buckinghamshire

|29 December 1863

|William George Cavendish

| {{Party name with colour|Liberal Party (UK)}}

|Robert Bateson Harvey

| {{Party name with colour|Conservative Party (UK)}}

|Succession to a peerage

|-

|Andover

|18 November 1863

|William Cubitt

| {{Party name with colour|Conservative Party (UK)}}

|William Humphery

| {{Party name with colour|Conservative Party (UK)}}

|Death

|-

|Oxford

|7 November 1863

|James Haughton Langston

| {{Party name with colour|Liberal Party (UK)}}

|Charles Neate

| {{Party name with colour|Liberal Party (UK)}}

|Death

|-

|Windsor

|4 November 1863

|George William Hope

| {{Party name with colour|Conservative Party (UK)}}

|Richard Henry Howard Vyse

| {{Party name with colour|Conservative Party (UK)}}

|Death

|-

|West Worcestershire

|26 October 1863

|Viscount Elmley

| {{Party name with colour|Conservative Party (UK)}}

|Frederick Lygon

| {{Party name with colour|Conservative Party (UK)}}

|Succession to a peerage

|-

|rowspan=2|Barnstaple

|rowspan=2|20 October 1863

|George Potts

| {{Party name with colour|Liberal Party (UK)}}

|Thomas Lloyd

| {{Party name with colour|Liberal Party (UK)}}

|Death

|-bgcolor=lightblue

|Thomas Lloyd

| {{Party name with colour|Liberal Party (UK)}}

|Richard Bremridge

| {{Party name with colour|Conservative Party (UK)}}

|By-election result reversed on petition

|-

|Richmond

|17 October 1863

|Roundell Palmer

| {{Party name with colour|Liberal Party (UK)}}

|Roundell Palmer

| {{Party name with colour|Liberal Party (UK)}}

|Attorney General for England and Wales

|-

|Reading

|17 October 1863

|Gillery Pigott

| {{Party name with colour|Liberal Party (UK)}}

|George Shaw-Lefevre

| {{Party name with colour|Liberal Party (UK)}}

|Resignation (Baron of the Court of the Exchequer)

|-

|Plymouth

|17 October 1863

|Robert Collier

| {{Party name with colour|Liberal Party (UK)}}

|Robert Collier

| {{Party name with colour|Liberal Party (UK)}}

|Solicitor General for England and Wales

|-

|Tamworth

|12 October 1863

|Viscount Raynham

| {{Party name with colour|Liberal Party (UK)}}

|John Peel

| {{Party name with colour|Conservative Party (UK)}}

|Succession to a peerage

|-bgcolor=lightblue

|Coventry

|8 October 1863

|Edward Ellice

| {{Party name with colour|Liberal Party (UK)}}

|Morgan Treherne

| {{Party name with colour|Conservative Party (UK)}}

|Death

|-

|Ludlow

|28 August 1863

|Beriah Botfield

| {{Party name with colour|Conservative Party (UK)}}

|William Fraser

| {{Party name with colour|Conservative Party (UK)}}

|Death

|-bgcolor=FFCC66

|Montgomery Boroughs

|20 August 1863

|John Willes-Johnson

| {{Party name with colour|Conservative Party (UK)}}

|Charles Hanbury-Tracy

| {{Party name with colour|Liberal Party (UK)}}

|Death

|-bgcolor=lightblue

|Pontefract

|3 August 1863

|Richard Monckton Milnes

| {{Party name with colour|Liberal Party (UK)}}

|Samuel Waterhouse

| {{Party name with colour|Conservative Party (UK)}}

|Elevation to the peerage

|-

|Clare

|3 August 1863

|Francis Macnamara Calcutt

| {{Party name with colour|Liberal Party (UK)}}

|Colman O'Loghlen

| {{Party name with colour|Liberal Party (UK)}}

|Death

|-

|Berwick-upon-Tweed

|29 June 1863

|Charles William Gordon

| {{Party name with colour|Conservative Party (UK)}}

|William Walter Cargill

| {{Party name with colour|Conservative Party (UK)}}

|Death

|-bgcolor=lightblue

|Lisburn

|26 June 1863

|John Doherty Barbour

| {{Party name with colour|Liberal Party (UK)}}

|Edward Wingfield Verner

| {{Party name with colour|Conservative Party (UK)}}

|Void By-election

|-

|New Ross

|8 June 1863

|Charles Tottenham (II)

| {{Party name with colour|Conservative Party (UK)}}

|Charles George Tottenham

| {{Party name with colour|Conservative Party (UK)}}

|Resignation

|- bgcolor=silver

|Kinsale

|8 June 1863

|John Arnott

| {{Party name with colour|Liberal Party (UK)}}

|George Conway Colthurst

| {{Party name with colour|Independent Liberal}} (Liberal-Conservative){{cite news|newspaper=The Times|date=26 September 1878|title=Death of George Colthurst|page=8}}

|Resignation

|-

|City of London

|2 June 1863

|Western Wood

| {{Party name with colour|Liberal Party (UK)}}

|George Joachim Goschen

| {{Party name with colour|Liberal Party (UK)}}

|Death

|-

|Tralee

|15 May 1863

|Daniel O'Connell Jnr

| {{Party name with colour|Liberal Party (UK)}}

|Thomas O'Hagan

| {{Party name with colour|Liberal Party (UK)}}

|Resignation

|-

|Antrim

|6 May 1863

|George Upton

| {{Party name with colour|Conservative Party (UK)}}

|Edward O'Neill

| {{Party name with colour|Conservative Party (UK)}}

|Succession to an Irish peerage

|-

|Halifax

|28 April 1863

|James Stansfeld

| {{Party name with colour|Liberal Party (UK)}}

|James Stansfeld

| {{Party name with colour|Liberal Party (UK)}}

|Civil Lord of the Admiralty

|-

|Radnor Boroughs

|25 April 1863

|George Cornewall Lewis

| {{Party name with colour|Liberal Party (UK)}}

|Richard Green-Price

| {{Party name with colour|Liberal Party (UK)}}

|Death

|-

|Dublin County

|22 April 1863

|James Hans Hamilton

| {{Party name with colour|Conservative Party (UK)}}

|Ion Hamilton

| {{Party name with colour|Conservative Party (UK)}}

|Resignation

|-

|Thetford

|21 April 1863

|Earl of Euston

| {{Party name with colour|Liberal Party (UK)}}

|Lord Frederick FitzRoy

| {{Party name with colour|Liberal Party (UK)}}

|Succession to a peerage

|-

|North Lancashire

|24 March 1863

|Marquess of Hartington

| {{Party name with colour|Liberal Party (UK)}}

|Marquess of Hartington

| {{Party name with colour|Liberal Party (UK)}}

|Civil Lord of the Admiralty

|-

|Bandon

|27 February 1863

|William Smyth Bernard

| {{Party name with colour|Conservative Party (UK)}}

|Henry Boyle Bernard

| {{Party name with colour|Conservative Party (UK)}}

|Death

|-bgcolor=FFCC66

|Lisburn

|23 February 1863

|Jonathan Joseph Richardson

| {{Party name with colour|Conservative Party (UK)}}

|John Doherty Barbour

| {{Party name with colour|Liberal Party (UK)}}

|Resignation

|-

|Chichester

|21 February 1863

|Humphrey William Freeland

| {{Party name with colour|Liberal Party (UK)}}

|John Abel Smith

| {{Party name with colour|Liberal Party (UK)}}

|Resignation

|-

|Devizes

|18 February 1863

|John Neilson Gladstone

| {{Party name with colour|Conservative Party (UK)}}

|William Addington

| {{Party name with colour|Conservative Party (UK)}}

|Death

|-

|West Somerset

|17 February 1863

|Charles Moody

| {{Party name with colour|Conservative Party (UK)}}

|William Gore-Langton

| {{Party name with colour|Conservative Party (UK)}}

|Resignation

|-

|Cambridgeshire

|14 February 1863

|Edward Ball

| {{Party name with colour|Conservative Party (UK)}}

|Lord George Manners

| {{Party name with colour|Conservative Party (UK)}}

|Resignation

|-bgcolor=lightblue

|Devonport

|12 February 1863

|Michael Seymour

| {{Party name with colour|Liberal Party (UK)}}

|William Ferrand

| {{Party name with colour|Conservative Party (UK)}}

|Resignation

|-

|Cambridge

|12 February 1863

|Andrew Steuart

| {{Party name with colour|Conservative Party (UK)}}

|Francis Powell

| {{Party name with colour|Conservative Party (UK)}}

|Resignation

|-

|Reigate

|6 February 1863

|William John Monson

| {{Party name with colour|Liberal Party (UK)}}

|Granville William Gresham Leveson-Gower

| {{Party name with colour|Liberal Party (UK)}}

|Succession to a peerage

|-

|Totnes

|20 January 1863

|George Hay

| {{Party name with colour|Liberal Party (UK)}}

|Alfred Seymour

| {{Party name with colour|Liberal Party (UK)}}

|Death

|-bgcolor=FFCC66

|East Kent

|5 January 1863

|William Deedes

| {{Party name with colour|Conservative Party (UK)}}

|Edward Dering

| {{Party name with colour|Liberal Party (UK)}}

|Death

|-

|Andover

|17 December 1862

|Henry Beaumont Coles

| {{Party name with colour|Conservative Party (UK)}}

|William Cubitt

| {{Party name with colour|Conservative Party (UK)}}

|Death

|-

|Totnes

|9 December 1862

|Thomas Mills

| {{Party name with colour|Liberal Party (UK)}}

|John Pender

| {{Party name with colour|Liberal Party (UK)}}

|Death

|-bgcolor=lightblue

|Southampton

|6 December 1862

|Brodie McGhie Willcox

| {{Party name with colour|Liberal Party (UK)}}

|William Anderson Rose

| {{Party name with colour|Conservative Party (UK)}}

|Death

|-

|Stoke-upon-Trent

|23 September 1862

|John Lewis Ricardo

| {{Party name with colour|Liberal Party (UK)}}

|Henry Grenfell

| {{Party name with colour|Liberal Party (UK)}}

|Death

|-

|County Carlow

|7 August 1862

|William McClintock-Bunbury

| {{Party name with colour|Conservative Party (UK)}}

|Denis Pack-Beresford

| {{Party name with colour|Conservative Party (UK)}}

|Resignation

|-

|Kirkcaldy Burghs

|25 July 1862

|Robert Ferguson

| {{Party name with colour|Liberal Party (UK)}}

|Roger Sinclair Aytoun

| {{Party name with colour|Liberal Party (UK)}}

|Resignation

|-

|Montgomeryshire

|14 July 1862

|Herbert Watkin Williams-Wynn

| {{Party name with colour|Conservative Party (UK)}}

|Charles Watkin Williams-Wynn

| {{Party name with colour|Conservative Party (UK)}}

|Death

|-

|Shrewsbury

|2 June 1862

|Robert Aglionby Slaney

| {{Party name with colour|Liberal Party (UK)}}

|Henry Robertson

| {{Party name with colour|Liberal Party (UK)}}

|Death

|-

|Kidderminster

|27 May 1862

|Alfred Rhodes Bristow

| {{Party name with colour|Liberal Party (UK)}}

|Luke White

| {{Party name with colour|Liberal Party (UK)}}

|Resignation

|-

|Oldham

|5 May 1862

|William Johnson Fox

| {{Party name with colour|Liberal Party (UK)}}

|John Tomlinson Hibbert

| {{Party name with colour|Liberal Party (UK)}}

|Resignation

|-

|Lambeth

|5 May 1862

|William Roupell

| {{Party name with colour|Liberal Party (UK)}}

|Frederick Doulton

| {{Party name with colour|Liberal Party (UK)}}

|Resignation

|-

|Preston

|4 April 1862

|Richard Assheton Cross

| {{Party name with colour|Conservative Party (UK)}}

|Thomas Hesketh

| {{Party name with colour|Conservative Party (UK)}}

|Resignation

|-

|Wycombe

|18 March 1862

|George Dashwood

| {{Party name with colour|Liberal Party (UK)}}

|John Remington Mills

| {{Party name with colour|Liberal Party (UK)}}

|Death

|-bgcolor=lightblue

|North Riding of Yorkshire

|17 March 1862

|Edward Stillingfleet Cayley

| {{Party name with colour|Liberal Party (UK)}}

|William Morritt

| {{Party name with colour|Conservative Party (UK)}}

|Death

|-

|Longford

|7 March 1862

|Luke White

| {{Party name with colour|Liberal Party (UK)}}

|Myles William O'Reilly

| {{Party name with colour|Liberal Party (UK)}}

|Lord of the Treasury

|-

|Canterbury

|6 March 1862

|Henry Butler-Johnstone

| {{Party name with colour|Conservative Party (UK)}}

|Henry Munro-Butler-Johnstone

| {{Party name with colour|Conservative Party (UK)}}

|Resignation

|-bgcolor=lightblue

|Wakefield

|28 February 1862

|William Henry Leatham

| {{Party name with colour|Liberal Party (UK)}}

|John Charles Dalrymple Hay

| {{Party name with colour|Conservative Party (UK)}}

|Void election

|-

|rowspan=2|Gloucester

|rowspan=2|26 February 1862

|Charles James Monk

| {{Party name with colour|Liberal Party (UK)}}

|Charles Berkeley

| {{Party name with colour|Liberal Party (UK)}}

|Void election

|-

|William Philip Price

| {{Party name with colour|Liberal Party (UK)}}

|John Joseph Powell

| {{Party name with colour|Liberal Party (UK)}}

|Void election

|-

|Leicester

|17 February 1862

|John Biggs

| {{Party name with colour|Liberal Party (UK)}}

|Peter Alfred Taylor

| {{Party name with colour|Liberal Party (UK)}}

|Resignation

|-bgcolor=lightblue

|Great Grimsby

|14 February 1862

|Lord Worsley

| {{Party name with colour|Liberal Party (UK)}}

|John Chapman

| {{Party name with colour|Conservative Party (UK)}}

|Succession to a peerage

|-bgcolor=lightblue

|Lincoln

|12 February 1862

|George Heneage

| {{Party name with colour|Liberal Party (UK)}}

|John Bramley-Moore

| {{Party name with colour|Conservative Party (UK)}}

|Resignation to contest Great Grimsby

|-

|New Shoreham

|5 February 1862

|Charles Burrell

| {{Party name with colour|Conservative Party (UK)}}

|Percy Burrell

| {{Party name with colour|Conservative Party (UK)}}

|Death

|-bgcolor=lightblue

|Oxfordshire

|3 February 1862

|George Harcourt

| {{Party name with colour|Liberal Party (UK)}}

|John Fane

| {{Party name with colour|Conservative Party (UK)}}

|Death

|-

|Coleraine

|31 January 1862

|John Boyd

| {{Party name with colour|Conservative Party (UK)}}

|Henry Bruce

| {{Party name with colour|Conservative Party (UK)}}

|Death

|-

|Nottingham

|26 December 1861

|John Mellor

| {{Party name with colour|Liberal Party (UK)}}

|Robert Juckes Clifton

| {{Party name with colour|Liberal Party (UK)}}

|Resignation (Justice of the Court of the King's Bench)

|-

|East Worcestershire

|20 December 1861

|John Hodgetts-Foley

| {{Party name with colour|Liberal Party (UK)}}

|Harry Vernon

| {{Party name with colour|Liberal Party (UK)}}

|Death

|-

|Finsbury

|17 December 1861

|Thomas Slingsby Duncombe

| {{Party name with colour|Liberal Party (UK)}}

|William Cox

| {{Party name with colour|Liberal Party (UK)}}

|Death

|-

|Birkenhead

|11 December 1861

|N/A

| {{Party name with colour|N/A}}

|John Laird

| {{Party name with colour|Conservative Party (UK)}}

|Birkenhead enfranchised

|-

|Carlisle

|26 November 1861

|James Graham

| {{Party name with colour|Liberal Party (UK)}}

|Edmund Potter

| {{Party name with colour|Liberal Party (UK)}}

|Death

|-bgcolor=FFCC66

|Lincoln

|9 November 1861

|Gervaise Tottenham Waldo Sibthorp

| {{Party name with colour|Conservative Party (UK)}}

|Charles Seely

| {{Party name with colour|Liberal Party (UK)}}

|Death

|-bgcolor=FFCC66

|Plymouth

|31 October 1861

|Viscount Valletort

| {{Party name with colour|Conservative Party (UK)}}

|Walter Morrison

| {{Party name with colour|Liberal Party (UK)}}

|Succession to a peerage

|-

|South Lancashire

|19 August 1861

|N/A

| {{Party name with colour|N/A}}

|Charles Turner

| {{Party name with colour|Conservative Party (UK)}}

|South Lancashire granted a third seat

|-

|Selkirkshire

|1 August 1861

|Allen Eliott-Lockhart

| {{Party name with colour|Conservative Party (UK)}}

|Lord Henry Scott

| {{Party name with colour|Conservative Party (UK)}}

|Resignation

|-

|Tamworth

|31 July 1861

|Robert Peel

| {{Party name with colour|Liberal Party (UK)}}

|Robert Peel

| {{Party name with colour|Liberal Party (UK)}}

|Chief Secretary for Ireland

|-

|Morpeth

|31 July 1861

|George Grey

| {{Party name with colour|Liberal Party (UK)}}

|George Grey

| {{Party name with colour|Liberal Party (UK)}}

|Home Secretary

|-

|Oxford

|30 July 1861

|Edward Cardwell

| {{Party name with colour|Liberal Party (UK)}}

|Edward Cardwell

| {{Party name with colour|Liberal Party (UK)}}

|Chancellor of the Duchy of Lancaster

|-

|City of London

|29 July 1861

|Lord John Russell

| {{Party name with colour|Liberal Party (UK)}}

|Western Wood

| {{Party name with colour|Liberal Party (UK)}}

|Resignation (elevated to the peerage)

|-

|Andover

|29 July 1861

|William Cubitt

| {{Party name with colour|Conservative Party (UK)}}

|Henry Beaumont Coles

| {{Party name with colour|Conservative Party (UK)}}

|Resignation to contest City of London

|-

|Richmond

|9 July 1861

|Henry Rich

| {{Party name with colour|Liberal Party (UK)}}

|Roundell Palmer

| {{Party name with colour|Liberal Party (UK)}}

|Resignation

|-

|Durham City

|8 July 1861

|William Atherton

| {{Party name with colour|Liberal Party (UK)}}

|William Atherton

| {{Party name with colour|Liberal Party (UK)}}

|Attorney General for England and Wales

|-

|Longford

|4 July 1861

|Henry White

| {{Party name with colour|Liberal Party (UK)}}

|Luke White

| {{Party name with colour|Liberal Party (UK)}}

|Resignation

|-

|Wolverhampton

|3 July 1861

|Sir Richard Bethell

| {{Party name with colour|Liberal Party (UK)}}

|Thomas Matthias Weguelin

| {{Party name with colour|Liberal Party (UK)}}

|Hereditary Peerage on appointment as Lord High Chancellor of Great Britain

|-

|Southwark

|30 May 1861

|Thomas Lloyd-Mostyn

| {{Party name with colour|Liberal Party (UK)}}

|Lord Richard Grosvenor

| {{Party name with colour|Liberal Party (UK)}}

|Death

|-

|Montgomery Boroughs

|4 May 1861

|David Pugh

| {{Party name with colour|Conservative Party (UK)}}

|John Willes-Johnson

| {{Party name with colour|Conservative Party (UK)}}

|Death

|-

|Banffshire

|1 May 1861

|Lachlan Gordon-Duff

| {{Party name with colour|Liberal Party (UK)}}

|Robert William Duff

| {{Party name with colour|Liberal Party (UK)}}

|Resignation

|-

|Southwark

|24 April 1861

|John Locke

| {{Party name with colour|Liberal Party (UK)}}

|John Locke

| {{Party name with colour|Liberal Party (UK)}}

|Recorder of Brighton

|-

|Tynemouth and North Shields

|23 April 1861

|Hugh Taylor

| {{Party name with colour|Conservative Party (UK)}}

|Richard Hodgson

| {{Party name with colour|Conservative Party (UK)}}

|Resignation

|-

|Marylebone

|19 April 1861

|Edwin James

| {{Party name with colour|Liberal Party (UK)}}

|John Harvey Lewis

| {{Party name with colour|Liberal Party (UK)}}

|Resignation

|-

|Tiverton

|28 March 1861

|The Viscount Palmerston

| {{Party name with colour|Liberal Party (UK)}}

|The Viscount Palmerston

| {{Party name with colour|Liberal Party (UK)}}

|Lord Warden of the Cinque Ports

|-

|Sutherland

|27 March 1861

|Marquess of Stafford

| {{Party name with colour|Liberal Party (UK)}}

|David Dundas

| {{Party name with colour|Liberal Party (UK)}}

|Succession to a peerage

|-bgcolor=lightblue

|County Cork

|28 February 1861

|Rickard Deasy

| {{Party name with colour|Liberal Party (UK)}}

|Nicholas Leader

| {{Party name with colour|Conservative Party (UK)}}

|Resignation (Baron of the Exchequer in Ireland)

|-

|Pembroke Boroughs

|22 February 1861

|Sir John Owen

| {{Party name with colour|Liberal Party (UK)}}

|Sir Hugh Owen

| {{Party name with colour|Liberal Party (UK)}}

|Death

|-bgcolor=lightblue

|South Wiltshire

|14 February 1861

|Sidney Herbert

| {{Party name with colour|Liberal Party (UK)}}

|Frederick Hervey-Bathurst

| {{Party name with colour|Conservative Party (UK)}}

|Elevation to the peerage

|-bgcolor=lightblue

|Aberdeenshire

|13 February 1861

|Lord Haddo

| {{Party name with colour|Liberal Party (UK)}}

|Walter Barttelot

| {{Party name with colour|Conservative Party (UK)}}

|Succession to a peerage

|-

|Bradford

|11 February 1861

|Titus Salt

| {{Party name with colour|Liberal Party (UK)}}

|William Edward Forster

| {{Party name with colour|Liberal Party (UK)}}

|Resignation

|-

|Bolton

|11 February 1861

|Joseph Crook

| {{Party name with colour|Liberal Party (UK)}}

|Thomas Barnes

| {{Party name with colour|Liberal Party (UK)}}

|Resignation

|-bgcolor=lightblue

|Leicester

|7 February 1861

|Joseph William Noble

| {{Party name with colour|Liberal Party (UK)}}

|William Unwin Heygate

| {{Party name with colour|Conservative Party (UK)}}

|Death

|-

|Pembrokeshire

|19 January 1861

|Viscount Emlyn

| {{Party name with colour|Conservative Party (UK)}}

|George Lort Phillips

| {{Party name with colour|Conservative Party (UK)}}

|Succession to a peerage

|-

|West Sussex

|27 December 1860

|Earl of March

| {{Party name with colour|Conservative Party (UK)}}

|Walter Barttelot

| {{Party name with colour|Conservative Party (UK)}}

|Succession to a peerage

|-

|Ripon

|22 December 1860

|John Ashley Warre

| {{Party name with colour|Liberal Party (UK)}}

|Reginald Vyner

| {{Party name with colour|Liberal Party (UK)}}

|Death

|-

|South Nottinghamshire

|18 December 1860

|Viscount Newark

| {{Party name with colour|Conservative Party (UK)}}

|Lord Stanhope

| {{Party name with colour|Conservative Party (UK)}}

|Succession to a peerage

|-

|Southwark

|12 December 1860

|Charles Napier

| {{Party name with colour|Liberal Party (UK)}}

|Austen Henry Layard

| {{Party name with colour|Liberal Party (UK)}}

|Death

|-

|Newcastle-upon-Tyne

|7 December 1860

|George Ridley

| {{Party name with colour|Liberal Party (UK)}}

|Somerset Beaumont

| {{Party name with colour|Liberal Party (UK)}}

|Resignation (Inclosure Commissioner)

|-

|Wick Burghs

|1 December 1860

|Samuel Laing

| {{Party name with colour|Liberal Party (UK)}}

|Viscount Bury

| {{Party name with colour|Liberal Party (UK)}}

|Resignation (Council of India)

|-

|Reading

|21 November 1860

|Francis Pigott

| {{Party name with colour|Liberal Party (UK)}}

|Gillery Pigott

| {{Party name with colour|Liberal Party (UK)}}

|Resignation (Lieutenant Governor of the Isle of Man)

|-

|Dartmouth

|3 November 1860

|John Dunn

| {{Party name with colour|Conservative Party (UK)}}

|John Hardy

| {{Party name with colour|Conservative Party (UK)}}

|Death

|-bgcolor=lightblue

|Boston

|30 October 1860

|Herbert Ingram

| {{Party name with colour|Liberal Party (UK)}}

|John Malcolm

| {{Party name with colour|Conservative Party (UK)}}

|Death

|-

|Honiton

|22 October 1860

|Joseph Locke

| {{Party name with colour|Liberal Party (UK)}}

|George Moffatt

| {{Party name with colour|Liberal Party (UK)}}

|Death

|-

|Ludlow

|4 September 1860

|Percy Egerton Herbert

| {{Party name with colour|Conservative Party (UK)}}

|George Windsor-Clive

| {{Party name with colour|Conservative Party (UK)}}

|Resignation

|-

|West Cumberland

|27 August 1860

|Henry Wyndham

| {{Party name with colour|Conservative Party (UK)}}

|Percy Wyndham

| {{Party name with colour|Conservative Party (UK)}}

|Death

|-

|Sligo Borough

|9 August 1860

|John Arthur Wynne

| {{Party name with colour|Conservative Party (UK)}}

|Francis Macdonogh

| {{Party name with colour|Conservative Party (UK)}}

|Resignation

|-

|Stafford

|3 August 1860

|John Ayshford Wise

| {{Party name with colour|Liberal Party (UK)}}

|Thomas Sidney

| {{Party name with colour|Liberal Party (UK)}}

|Resignation

|-

|Donegal

|17 July 1860

|Edmund Hayes

| {{Party name with colour|Conservative Party (UK)}}

|Viscount Hamilton

| {{Party name with colour|Conservative Party (UK)}}

|Death

|-

|Brighton

|16 July 1860

|George Brooke-Pechell

| {{Party name with colour|Liberal Party (UK)}}

|James White

| {{Party name with colour|Liberal Party (UK)}}

|Death

|-

|Belfast

|15 June 1860

|Richard Davison

| {{Party name with colour|Conservative Party (UK)}}

|Samuel Gibson Getty

| {{Party name with colour|Conservative Party (UK)}}

|Resignation

|-

|Lymington

|24 May 1860

|Sir John Rivett-Carnac

| {{Party name with colour|Conservative Party (UK)}}

|Lord George Gordon-Lennox

| {{Party name with colour|Conservative Party (UK)}}

|Resignation

|-

|Berkshire

|2 May 1860

|Leicester Viney Vernon

| {{Party name with colour|Conservative Party (UK)}}

|Richard Benyon

| {{Party name with colour|Conservative Party (UK)}}

|Death

|-bgcolor=lightblue

|Harwich

|24 April 1860

|William Campbell

| {{Party name with colour|Liberal Party (UK)}}

|Richard Rowley

| {{Party name with colour|Conservative Party (UK)}}

|Succession to a peerage

|-

|Clare

|13 April 1860

|Luke White

| {{Party name with colour|Liberal Party (UK)}}

|Francis Macnamara Calcutt

| {{Party name with colour|Liberal Party (UK)}}

|Void election

|-bgcolor=lightblue

|Londonderry City

|2 April 1860

|Robert Ferguson

| {{Party name with colour|Liberal Party (UK)}}

|William McCormick

| {{Party name with colour|Conservative Party (UK)}}

|Death

|-

|rowspan=2|Norwich

|rowspan=2|28 March 1860

|Viscount Bury

| {{Party name with colour|Liberal Party (UK)}}

|William Russell

| {{Party name with colour|Liberal Party (UK)}}

|Void election

|-

|Henry William Schneider

| {{Party name with colour|Liberal Party (UK)}}

|Edward Warner

| {{Party name with colour|Liberal Party (UK)}}

|Void election

|-bgcolor=FFCC66

|Roscommon

|26 March 1860

|Thomas William Goff

| {{Party name with colour|Conservative Party (UK)}}

|Charles Owen O'Conor

| {{Party name with colour|Liberal Party (UK)}}

|Void election

|-

|Worcester

|12 March 1860

|William Laslett

| {{Party name with colour|Liberal Party (UK)}}

|Richard Padmore

| {{Party name with colour|Liberal Party (UK)}}

|Resignation

|-

|West Surrey

|10 March 1860

|Henry Drummond

| {{Party name with colour|Conservative Party (UK)}}

|George Cubitt

| {{Party name with colour|Conservative Party (UK)}}

|Death

|-

|County Cork

|5 March 1860

|Rickard Deasy

| {{Party name with colour|Liberal Party (UK)}}

|Rickard Deasy

| {{Party name with colour|Liberal Party (UK)}}

|Attorney General for Ireland

|-

|Ennis

|20 February 1860

|John FitzGerald

| {{Party name with colour|Liberal Party (UK)}}

|William Stacpoole

| {{Party name with colour|Liberal Party (UK)}}

|Resignation (Judge of the Court of the Queen's Bench in Ireland)

|-

|Hertford

|13 February 1860

|William Cowper

| {{Party name with colour|Liberal Party (UK)}}

|William Cowper

| {{Party name with colour|Liberal Party (UK)}}

|First Commissioner of Works

|-

|Gateshead

|13 February 1860

|William Hutt

| {{Party name with colour|Liberal Party (UK)}}

|William Hutt

| {{Party name with colour|Liberal Party (UK)}}

|Vice-President of the Board of Trade and Paymaster General

|-

|Forfarshire

|1 February 1860

|Viscount Duncan

| {{Party name with colour|Liberal Party (UK)}}

|Charles Carnegie

| {{Party name with colour|Liberal Party (UK)}}

|Succession to a peerage

|-

|Scarborough

|1 February 1860

|William Denison

| {{Party name with colour|Liberal Party (UK)}}

|John Dent Dent

| {{Party name with colour|Liberal Party (UK)}}

|Succession to a peerage

|-bgcolor=FFCC66

|Pontefract

|31 January 1860

|William Overend

| {{Party name with colour|Conservative Party (UK)}}

|Hugh Childers

| {{Party name with colour|Liberal Party (UK)}}

|Resignation (arbitrator recommended resignation after contested election)

|-bgcolor=lightblue

|Beverly

|31 January 1860

|Ralph Walters

| {{Party name with colour|Liberal Party (UK)}}

|James Walker

| {{Party name with colour|Conservative Party (UK)}}

|Void election

|-

|Lewes

|16 January 1860

|Henry Fitzroy

| {{Party name with colour|Liberal Party (UK)}}

|John Blencowe

| {{Party name with colour|Liberal Party (UK)}}

|Death

|-

|Reading

|11 January 1860

|Henry Singer Keating

| {{Party name with colour|Liberal Party (UK)}}

|Francis Goldsmid

| {{Party name with colour|Liberal Party (UK)}}

|Resignation (Justice of the Court of Common Pleas)

|-

|Liskeard

|9 January 1860

|William Atherton

| {{Party name with colour|Liberal Party (UK)}}

|William Atherton

| {{Party name with colour|Liberal Party (UK)}}

|Solicitor General for England and Wales

|-bgcolor=FFCC66

|Whitby

|23 November 1859

|Robert Stephenson

| {{Party name with colour|Conservative Party (UK)}}

|Harry Stephen Thompson

| {{Party name with colour|Liberal Party (UK)}}

|Death

|-bgcolor=lightblue

|Ayrshire

|31 October 1859

|Lord Patrick Crichton-Stuart

| {{Party name with colour|Liberal Party (UK)}}

|James Fergusson

| {{Party name with colour|Conservative Party (UK)}}

|Death

|-

|South Shropshire

|14 September 1859

|Robert Windsor-Clive

| {{Party name with colour|Conservative Party (UK)}}

|Baldwin Leighton

| {{Party name with colour|Conservative Party (UK)}}

|Death

|-

|Kingston upon Hull

|20 August 1859

|Joseph Hoare

| {{Party name with colour|Conservative Party (UK)}}

|Joseph Somes

| {{Party name with colour|Conservative Party (UK)}}

|Void election

|-bgcolor=FFCC66

|Berwick-upon-Tweed

|20 August 1859

|Ralph Anstruther Earle

| {{Party name with colour|Conservative Party (UK)}}

|Dudley Marjoribanks

| {{Party name with colour|Liberal Party (UK)}}

|Resignation (in exchange for withdrawal of election petition)

|-

|Liskeard

|18 August 1859

|Ralph Grey

| {{Party name with colour|Liberal Party (UK)}}

|Ralph Bernal Osborne

| {{Party name with colour|Liberal Party (UK)}}

|Resignation

|-

|Hertford

|18 August 1859

|William Cowper

| {{Party name with colour|Liberal Party (UK)}}

|William Cowper

| {{Party name with colour|Liberal Party (UK)}}

|Vice-President of the Board of Trade and Paymaster General

|-

|Devonport

|17 August 1859

|James Wilson

| {{Party name with colour|Liberal Party (UK)}}

|Arthur William Buller

| {{Party name with colour|Liberal Party (UK)}}

|Resignation

|-bgcolor=FFCC66

|Bodmin

|13 August 1859

|William Michell

| {{Party name with colour|Conservative Party (UK)}}

|James Wyld

| {{Party name with colour|Liberal Party (UK)}}

|Resignation (in exchange for withdrawal of election petition)

|-bgcolor=lightblue

|Taunton

|9 August 1859

|Henry Labouchere

| {{Party name with colour|Liberal Party (UK)}}

|George Cavendish-Bentinck

| {{Party name with colour|Conservative Party (UK)}}

|Resignation (Elevation to the peerage)

|-

|Devonport

|9 August 1859

|Thomas Erskine Perry

| {{Party name with colour|Liberal Party (UK)}}

|Michael Seymour

| {{Party name with colour|Liberal Party (UK)}}

|Resignation (Council of India)

|-bgcolor=lightblue

|Dartmouth

|8 August 1859

|Edward Wyndham Harrington Schenley

| {{Party name with colour|Liberal Party (UK)}}

|John Dunn

| {{Party name with colour|Conservative Party (UK)}}

|Void election

|-

|Wicklow

|18 July 1859

|Lord Proby

| {{Party name with colour|Liberal Party (UK)}}

|Lord Proby

| {{Party name with colour|Liberal Party (UK)}}

|Comptroller of the Household

|-

|Wolverhampton

|9 July 1859

|Charles Pelham Villiers

| {{Party name with colour|Liberal Party (UK)}}

|Charles Pelham Villiers

| {{Party name with colour|Liberal Party (UK)}}

|President of the Poor Law Board

|-

|Ashton-under-Lyne

|9 July 1859

|Thomas Milner Gibson

| {{Party name with colour|Liberal Party (UK)}}

|Thomas Milner Gibson

| {{Party name with colour|Liberal Party (UK)}}

|President of the Board of Trade

|-

|Marylebone

|7 July 1859

|Benjamin Hall

| {{Party name with colour|Liberal Party (UK)}}

|Edmond Roche

| {{Party name with colour|Liberal Party (UK)}}

|Elevation to the peerage

|-

|West Gloucestershire

|7 July 1859

|Robert Kingscote

| {{Party name with colour|Liberal Party (UK)}}

|Robert Kingscote

| {{Party name with colour|Liberal Party (UK)}}

|Groom in Waiting

|-

|Lichfield

|6 July 1859

|Lord Alfred Paget

| {{Party name with colour|Liberal Party (UK)}}

|Lord Alfred Paget

| {{Party name with colour|Liberal Party (UK)}}

|Chief Equerry and Clerk Marshal

|-

|Northampton

|5 July 1859

|Robert Vernon Smith

| {{Party name with colour|Liberal Party (UK)}}

|The Lord Henley

| {{Party name with colour|Liberal Party (UK)}}

|Elevation to the peerage

|-

|Kerry

|5 July 1859

|Viscount Castlerosse

| {{Party name with colour|Liberal Party (UK)}}

|Viscount Castlerosse

| {{Party name with colour|Liberal Party (UK)}}

|Vice-Chamberlain of the HouseholdAccording to the writ of election the by-election cause was Castlerosse being appointed Treasurer of the Household. However according to the London Gazette he does not appear to have actually been appointed to that office but was instead appointed Vice-Chamberlain of the Household.

|-

|County Cork

|5 July 1859

|Rickard Deasy

| {{Party name with colour|Liberal Party (UK)}}

|Rickard Deasy

| {{Party name with colour|Liberal Party (UK)}}

|Solicitor General for Ireland

|-

|Oxford University

|1 July 1859

|William Ewart Gladstone

| {{Party name with colour|Peelite}}

|William Ewart Gladstone

| {{Party name with colour|Liberal Party (UK)}}

|Chancellor of the Exchequer

|-

|Monmouthshire

|1 July 1859

|Edward Arthur Somerset

| {{Party name with colour|Conservative Party (UK)}}

|Poulett Somerset

| {{Party name with colour|Conservative Party (UK)}}

|Resignation

|-

|Clonmel

|1 July 1859

|John Bagwell

| {{Party name with colour|Liberal Party (UK)}}

|John Bagwell

| {{Party name with colour|Liberal Party (UK)}}

|Lord Commissioner of the Treasury

|-

|Ennis

|29 June 1859

|John FitzGerald

| {{Party name with colour|Liberal Party (UK)}}

|John FitzGerald

| {{Party name with colour|Liberal Party (UK)}}

|Attorney General for Ireland

|-

|Cork

|29 June 1859

|William Trant Fagan

| {{Party name with colour|Liberal Party (UK)}}

|Francis Lyons

| {{Party name with colour|Liberal Party (UK)}}

|Death

|-

|South Wiltshire

|29 June 1859An uncontested by-election.

|Sidney Herbert

| {{Party name with colour|Liberal Party (UK)}}

|Sidney Herbert

| {{Party name with colour|Liberal Party (UK)}}

|Secretary of State for War and Secretary at WarSeat vacated on appointment to the office noted.

|-

|Edinburgh

|28 June 1859An uncontested by-election.

|James Moncreiff

| {{Party name with colour|Liberal Party (UK)}}

|James Moncreiff

| {{Party name with colour|Liberal Party (UK)}}

|Lord AdvocateSeat vacated on appointment to the office noted.

|-

|Sandwich

|28 June 1859

|Edward Knatchbull-Hugessen

| {{Party name with colour|Liberal Party (UK)}}

|Edward Knatchbull-Hugessen

| {{Party name with colour|Liberal Party (UK)}}

|Lord Commissioner of the TreasurySeat vacated on appointment to the office noted.

|-

|Norwich

|28 June 1859

|Viscount Bury

| {{Party name with colour|Liberal Party (UK)}}

|Viscount Bury

| {{Party name with colour|Liberal Party (UK)}}

|Treasurer of the HouseholdSeat vacated on appointment to the office noted.According to the writ of election the by-election cause was Bury being appointed Comptroller of the Household. However according to the London Gazette he does not appear to have actually been appointed to that office but was instead appointed Treasurer of the Household.

|-

|Newcastle upon Tyne

|28 June 1859

|Thomas Emerson Headlam

| {{Party name with colour|Liberal Party (UK)}}

|Thomas Emerson Headlam

| {{Party name with colour|Liberal Party (UK)}}

|Judge Advocate GeneralSeat vacated on appointment to the office noted.

|-

|Halifax

|28 June 1859An uncontested by-election.

|Charles Wood

| {{Party name with colour|Liberal Party (UK)}}

|Charles Wood

| {{Party name with colour|Liberal Party (UK)}}

|Secretary of State for IndiaSeat vacated on appointment to the office noted.

|-

|Bedford

|28 June 1859

|Samuel Whitbread

| {{Party name with colour|Liberal Party (UK)}}

|Samuel Whitbread

| {{Party name with colour|Liberal Party (UK)}}

|Civil Lord of the AdmiraltySeat vacated on appointment to the office noted.

|-

|Wigtown Burghs

|27 June 1859An uncontested by-election.

|William Dunbar

| {{Party name with colour|Liberal Party (UK)}}

|William Dunbar

| {{Party name with colour|Liberal Party (UK)}}

|Lord Commissioner of the Treasury

|-

|Radnor Boroughs

|27 June 1859An uncontested by-election.

|George Cornewall Lewis

| {{Party name with colour|Liberal Party (UK)}}

|George Cornewall Lewis

| {{Party name with colour|Liberal Party (UK)}}

|Home SecretarySeat vacated on appointment to the office noted.

|-

|Wolverhampton

|27 June 1859An uncontested by-election.

|Richard Bethell

| {{Party name with colour|Liberal Party (UK)}}

|Richard Bethell

| {{Party name with colour|Liberal Party (UK)}}

|Attorney General for England and WalesSeat vacated on appointment to the office noted.

|-

|Tiverton

|27 June 1859An uncontested by-election.

|The Viscount Palmerston

| {{Party name with colour|Liberal Party (UK)}}

|The Viscount Palmerston

| {{Party name with colour|Liberal Party (UK)}}

|Prime Minister and First Lord of the Treasury

|-

|Reading

|27 June 1859An uncontested by-election.

|Henry Singer Keating

| {{Party name with colour|Liberal Party (UK)}}

|Henry Singer Keating

| {{Party name with colour|Liberal Party (UK)}}

|Solicitor General for England and WalesSeat vacated on appointment to the office noted.

|-

|Oxford

|27 June 1859An uncontested by-election.

|Edward Cardwell

| {{Party name with colour|Liberal Party (UK)}}

|Edward Cardwell

| {{Party name with colour|Liberal Party (UK)}}

|Chief Secretary for IrelandSeat vacated on appointment to the office noted.

|-

|Morpeth

|27 June 1859An uncontested by-election.

|George Grey

| {{Party name with colour|Liberal Party (UK)}}

|George Grey

| {{Party name with colour|Liberal Party (UK)}}

|Chancellor of the Duchy of LancasterSeat vacated on appointment to the office noted.

|-

|Lewes

|27 June 1859An uncontested by-election.

|Henry Fitzroy

| {{Party name with colour|Liberal Party (UK)}}

|Henry Fitzroy

| {{Party name with colour|Liberal Party (UK)}}

|First Commissioner of WorksSeat vacated on appointment to the office noted.

|-

|Devonport

|27 June 1859An uncontested by-election.

|James Wilson

| {{Party name with colour|Liberal Party (UK)}}

|James Wilson

| {{Party name with colour|Liberal Party (UK)}}

|Vice-President of the Board of Trade and Paymaster GeneralSeat vacated on appointment to the office noted.

|-

|Calne

|27 June 1859An uncontested by-election.

|Robert Lowe

| {{Party name with colour|Liberal Party (UK)}}

|Robert Lowe

| {{Party name with colour|Liberal Party (UK)}}

|Vice-President of the Committee of the Council on Education

|-

|Ashton-under-Lyne

|27 June 1859An uncontested by-election.

|Thomas Milner Gibson

| {{Party name with colour|Liberal Party (UK)}}

|Thomas Milner Gibson

| {{Party name with colour|Liberal Party (UK)}}

|President of the Poor Law Board

|-

|City of London

|27 June 1859An uncontested by-election.

|Lord John Russell

| {{Party name with colour|Liberal Party (UK)}}

|Lord John Russell

| {{Party name with colour|Liberal Party (UK)}}

|Foreign SecretarySeat vacated on appointment to the office noted.

|-

|colspan=10 |

|-

!By-election !! Date !! Former incumbent !! colspan=2 | Party !! Winner !! colspan=2 | Party !! Cause

|-bgcolor=lightblue

|Harwich

|18 March 1859

|John Bagshaw

| {{Party name with colour|Whigs (British political party)}}

|Henry Jervis-White-Jervis

| {{Party name with colour|Conservative Party (UK)}}

|Resignation

|-

|Stirlingshire

|14 March 1859

|Peter Blackburn

| {{Party name with colour|Conservative Party (UK)}}

|Peter Blackburn

| {{Party name with colour|Conservative Party (UK)}}

|Junior Lord of the Treasury

|-

|North Northumberland

|10 March 1859

|Lord Lovaine

| {{Party name with colour|Conservative Party (UK)}}

|Lord Lovaine

| {{Party name with colour|Conservative Party (UK)}}

|Vice-President of the Board of Trade and Paymaster General

|-

|West Sussex

|9 March 1859

|Earl of March

| {{Party name with colour|Conservative Party (UK)}}

|Earl of March

| {{Party name with colour|Conservative Party (UK)}}

|President of the Poor Law Board

|-

|North Wiltshire

|8 March 1859

|Thomas H. Sotheron-Estcourt

| {{Party name with colour|Conservative Party (UK)}}

|Thomas H. Sotheron-Estcourt

| {{Party name with colour|Conservative Party (UK)}}

|Home Secretary

|-

|Tewkesbury

|8 March 1859

|Frederick Lygon

| {{Party name with colour|Conservative Party (UK)}}

|Frederick Lygon

| {{Party name with colour|Conservative Party (UK)}}

|Civil Lord of the Admiralty

|-

|Bury St. Edmunds

|7 March 1859

|Earl Jermyn

| {{Party name with colour|Conservative Party (UK)}}

|Lord Alfred Hervey

| {{Party name with colour|Conservative Party (UK)}}

|Succession to a peerage

|-

|Midhurst

|3 March 1859

|Samuel Warren

| {{Party name with colour|Conservative Party (UK)}}

|John Hardy

| {{Party name with colour|Conservative Party (UK)}}

|Resignation

|-

|Marylebone

|25 February 1859

|Viscount Ebrington

| {{Party name with colour|Whigs (British political party)}}

|Edwin James

| {{Party name with colour|Whigs (British political party)}}

|Resignation and elevation to the House of Lords through a Writ of acceleration

|-bgcolor=FFCC66

|East Worcestershire

|24 February 1859

|George Rushout

| {{Party name with colour|Conservative Party (UK)}}

|Frederick Gough-Calthorpe

| {{Party name with colour|Whigs (British political party)}}

|Succession to a peerage

|-

|West Riding of Yorkshire

|21 February 1859

|Viscount Goderich

| {{Party name with colour|Whigs (British political party)}}

|John Ramsden

| {{Party name with colour|Whigs (British political party)}}

|Succession to a peerage

|-

|Enniskillen

|21 February 1859

|James Whiteside

| {{Party name with colour|Conservative Party (UK)}}

|John Lowry Cole

| {{Party name with colour|Conservative Party (UK)}}

|Resignation in order to contest Dublin University

|-

|Greenwich

|16 February 1859

|John Townsend

| {{Party name with colour|Whigs (British political party)}}

|David Salomons

| {{Party name with colour|Whigs (British political party)}}

|Resignation

|-

|Hythe

|15 February 1859

|John Ramsden

| {{Party name with colour|Whigs (British political party)}}

|Mayer Amschel de Rothschild

| {{Party name with colour|Whigs (British political party)}}

|Resignation in order to contest the West Riding of Yorkshire

|-

|Oxford University

|12 February 1859

|William Ewart Gladstone

| {{Party name with colour|Peelite}}

|William Ewart Gladstone

| {{Party name with colour|Peelite}}

|Resignation (Lord High Commissioner of the Ionian Islands)

|-bgcolor=lightblue

|Galway Borough

|11 February 1859

|Anthony O'Flaherty

| {{Party name with colour|Whigs (British political party)}}

|John Orrell Lever

| {{Party name with colour|Conservative Party (UK)}}

|Void election

|-

|Dublin University

|11 February 1859

|George Alexander Hamilton

| {{Party name with colour|Conservative Party (UK)}}

|James Whiteside

| {{Party name with colour|Conservative Party (UK)}}

|Resignation

|-

|Banbury

|9 February 1859

|Henry William Tancred

| {{Party name with colour|Whigs (British political party)}}

|Bernhard Samuelson

| {{Party name with colour|Whigs (British political party)}}

|Resignation

|-

|Linlithgowshire

|5 February 1859

|George Dundas

| {{Party name with colour|Conservative Party (UK)}}

|Charles Baillie

| {{Party name with colour|Conservative Party (UK)}}

|Resignation (Lieutenant Governor of Prince Edward Island)

|-

|Boston

|3 February 1859

|William Henry Adams

| {{Party name with colour|Conservative Party (UK)}}

|William Henry Adams

| {{Party name with colour|Conservative Party (UK)}}

|Recorder of Derby

|-

|Breconshire

|28 December 1858

|Joseph Bailey

| {{Party name with colour|Conservative Party (UK)}}

|Godfrey Morgan

| {{Party name with colour|Conservative Party (UK)}}

|Death

|-

|Herefordshire

|18 December 1858

|Thomas William Booker-Blakemore

| {{Party name with colour|Conservative Party (UK)}}

|Lord Montagu Graham

| {{Party name with colour|Conservative Party (UK)}}

|Death

|-

|Manchester

|17 November 1858

|John Potter

| {{Party name with colour|Whigs (British political party)}}

|Thomas Bazley

| {{Party name with colour|Whigs (British political party)}}

|Death

|-

|Reigate

|23 October 1858

|Henry Rawlinson

| {{Party name with colour|Whigs (British political party)}}

|William Monson

| {{Party name with colour|Whigs (British political party)}}

|Resignation (Council of India)

|-

|Leominster

|22 October 1858

|John Willoughby

| {{Party name with colour|Conservative Party (UK)}}

|Charles Bateman-Hanbury

| {{Party name with colour|Conservative Party (UK)}}

|Resignation (Council of India)

|-

|Guildford

|22 October 1858

|Ross Donnelly Mangles

| {{Party name with colour|Whigs (British political party)}}

|Guildford Onslow

| {{Party name with colour|Whigs (British political party)}}

|Resignation (Council of India)

|-

|North Cheshire

|7 August 1858

|William Egerton

| {{Party name with colour|Conservative Party (UK)}}

|Wilbraham Egerton

| {{Party name with colour|Conservative Party (UK)}}

|Resignation

|-

|South Devon

|6 August 1858

|John Yarde-Buller

| {{Party name with colour|Conservative Party (UK)}}

|Samuel Trehawke Kekewich

| {{Party name with colour|Conservative Party (UK)}}

|Resignation and elevation to the peerage

|-

|Stamford

|17 July 1858

|John Inglis

| {{Party name with colour|Conservative Party (UK)}}

|Stafford Northcote

| {{Party name with colour|Conservative Party (UK)}}

|Resignation (Lord Justice Clerk)

|-

|West Cornwall

|5 July 1858

|Michael Williams

| {{Party name with colour|Whigs (British political party)}}

|John St Aubyn

| {{Party name with colour|Whigs (British political party)}}

|Death

|-

|East Norfolk

|1 July 1858

|Edward Buxton

| {{Party name with colour|Whigs (British political party)}}

|Wenman Coke

| {{Party name with colour|Whigs (British political party)}}

|Death

|-

|Hertfordshire

|8 June 1858

|Edward Bulwer-Lytton

| {{Party name with colour|Conservative Party (UK)}}

|Edward Bulwer-Lytton

| {{Party name with colour|Conservative Party (UK)}}

||Secretary of State for the Colonies

|-

|King's Lynn

|5 June 1858

|Lord Stanley

| {{Party name with colour|Conservative Party (UK)}}

|Lord Stanley

| {{Party name with colour|Conservative Party (UK)}}

||President of the Board of Control

|-bgcolor=lightblue

|Limerick City

|21 May 1858

|George Gavin

| {{Party name with colour|Whigs (British political party)}}

|James Spaight

| {{Party name with colour|Conservative Party (UK)}}

|Void By-Election

|-

|Leitrim

|17 May 1858

|Hugh Lyons-Montgomery

| {{Party name with colour|Conservative Party (UK)}}

|William Ormsby-Gore

| {{Party name with colour|Conservative Party (UK)}}

|Resignation

|-

|Dublin University

|27 March 1858

|Joseph Napier

| {{Party name with colour|Conservative Party (UK)}}

|Anthony Lefroy

| {{Party name with colour|Conservative Party (UK)}}

|Resignation (Lord Chancellor of Ireland)

|-

|City Durham

|17 March 1858

|John Mowbray

| {{Party name with colour|Conservative Party (UK)}}

|John Mowbray

| {{Party name with colour|Conservative Party (UK)}}

|Judge Advocate General

|-

|Tyrone

|11 March 1858

|Lord Claud Hamilton

| {{Party name with colour|Conservative Party (UK)}}

|Lord Claud Hamilton

| {{Party name with colour|Conservative Party (UK)}}

|Treasurer of the Household

|-

|North Northumberland

|11 March 1858

|Lord Lovaine

| {{Party name with colour|Conservative Party (UK)}}

|Lord Lovaine

| {{Party name with colour|Conservative Party (UK)}}

|Civil Lord of the Admiralty

|-

|County Dublin

|11 March 1858

|Thomas Edward Taylor

| {{Party name with colour|Conservative Party (UK)}}

|Thomas Edward Taylor

| {{Party name with colour|Conservative Party (UK)}}

|Junior Lord of the Treasury

|-

|South Shropshire

|9 March 1858

|Viscount Newport

| {{Party name with colour|Conservative Party (UK)}}

|Viscount Newport

| {{Party name with colour|Conservative Party (UK)}}

|Vice-Chamberlain of the Household

|-

|Enniskillen

|9 March 1858

|James Whiteside

| {{Party name with colour|Conservative Party (UK)}}

|James Whiteside

| {{Party name with colour|Conservative Party (UK)}}

|Attorney-General for Ireland

|-

|North Staffordshire

|8 March 1858

|Charles Adderley

| {{Party name with colour|Conservative Party (UK)}}

|Charles Adderley

| {{Party name with colour|Conservative Party (UK)}}

|Vice-President of the Committee of the Council on Education and President of the Board of Health

|-

|North Leicestershire

|8 March 1858

|Lord John Manners

| {{Party name with colour|Conservative Party (UK)}}

|Lord John Manners

| {{Party name with colour|Conservative Party (UK)}}

|First Commissioner of Works

|-

|Buckinghamshire

|8 March 1858

|Benjamin Disraeli

| {{Party name with colour|Conservative Party (UK)}}

|Benjamin Disraeli

| {{Party name with colour|Conservative Party (UK)}}

|Chancellor of the Exchequer

|-

|East Suffolk

|6 March 1858

|Fitzroy Kelly

| {{Party name with colour|Conservative Party (UK)}}

|Fitzroy Kelly

| {{Party name with colour|Conservative Party (UK)}}

|Attorney General for England and Wales

|-

|Oxfordshire

|6 March 1858

|Joseph Warner Henley

| {{Party name with colour|Conservative Party (UK)}}

|Joseph Warner Henley

| {{Party name with colour|Conservative Party (UK)}}

|President of the Board of Trade

|-

|Chichester

|6 March 1858

|Lord Henry Lennox

| {{Party name with colour|Conservative Party (UK)}}

|Lord Henry Lennox

| {{Party name with colour|Conservative Party (UK)}}

|Junior Lord of the Treasury

|-

|North Wiltshire

|5 March 1858

|Thomas H. Sotheron-Estcourt

| {{Party name with colour|Conservative Party (UK)}}

|Thomas H. Sotheron-Estcourt

| {{Party name with colour|Conservative Party (UK)}}

|President of the Poor Law Board

|-

|Belfast

|5 March 1858

|Hugh Cairns

| {{Party name with colour|Conservative Party (UK)}}

|Hugh Cairns

| {{Party name with colour|Conservative Party (UK)}}

|Solicitor General for England and Wales

|-

|King's Lynn

|4 March 1858

|Lord Stanley

| {{Party name with colour|Conservative Party (UK)}}

|Lord Stanley

| {{Party name with colour|Conservative Party (UK)}}

|Secretary of State for the Colonies

|-

|Huntingdon

|4 March 1858

|Jonathan Peel

| {{Party name with colour|Conservative Party (UK)}}

|Jonathan Peel

| {{Party name with colour|Conservative Party (UK)}}

|Secretary of State for War and Secretary at War

|-

|Cambridge University

|4 March 1858

|Spencer Horatio Walpole

| {{Party name with colour|Conservative Party (UK)}}

|Spencer Horatio Walpole

| {{Party name with colour|Conservative Party (UK)}}

|Home Secretary

|-

|Wenlock

|3 March 1858

|George Weld-Forester

| {{Party name with colour|Conservative Party (UK)}}

|George Weld-Forester

| {{Party name with colour|Conservative Party (UK)}}

|Comptroller of the Household

|-

|Stamford

|3 March 1858

|Sir Frederic Thesiger

| {{Party name with colour|Conservative Party (UK)}}

|John Inglis

| {{Party name with colour|Conservative Party (UK)}}

|Hereditary Peerage on appointment as Lord High Chancellor of Great Britain

|-

|Droitwich

|3 March 1858

|Sir John Pakington

| {{Party name with colour|Conservative Party (UK)}}

|Sir John Pakington

| {{Party name with colour|Conservative Party (UK)}}

|First Lord of the Admiralty

|-

|Cockermouth

|3 March 1858

|Lord Naas

| {{Party name with colour|Conservative Party (UK)}}

|Lord Naas

| {{Party name with colour|Conservative Party (UK)}}

|Chief Secretary for Ireland

|-

|Bridgnorth

|3 March 1858

|Henry Whitmore

| {{Party name with colour|Conservative Party (UK)}}

|Henry Whitmore

| {{Party name with colour|Conservative Party (UK)}}

|Junior Lord of the Treasury

|-

|Wicklow

|25 February 1858

|Viscount Milton

| {{Party name with colour|Whigs (British political party)}}

|Lord Proby

| {{Party name with colour|Whigs (British political party)}}

|Succession to a peerage

|-bgcolor=lightblue

|South Northamptonshire

|20 February 1858

|Viscount Althorp

| {{Party name with colour|Whigs (British political party)}}

|Henry Cartwright

| {{Party name with colour|Conservative Party (UK)}}

|Succession to a peerage

|-

|Limerick City

|15 February 1858

|James O'Brien

| {{Party name with colour|Whigs (British political party)}}

|George Gavin

| {{Party name with colour|Whigs (British political party)}}

|Resignation (Justice of the Court of Queen's Bench in Ireland)

|-bgcolor=FFCC66

|Reigate

|6 February 1858

|William Hackblock

|{{Party name with color|Independent Whig|no_link=y}}{{cite news |title=Election Intelligence |url=https://www.britishnewspaperarchive.co.uk/viewer/bl/0001427/18570312/014/0003 |work=Morning Advertiser |date=12 March 1857 |page=3 |via=British Newspaper Archive|url-access=subscription }}{{cite news |title=Electioneering Intelligence |url=https://www.britishnewspaperarchive.co.uk/viewer/bl/0000257/18570317/029/0007 |work=Sussex Advertiser |date=17 March 1857 |page=7 |via=British Newspaper Archive|url-access=subscription }}

|Henry Rawlinson

| {{Party name with colour|Whigs (British political party)}}

|Death

|-bgcolor=FFCC66

|Mayo

|30 December 1857

|George Henry Moore

| {{Party name with colour|Independent Irish Party}}

|Lord John Browne

| {{Party name with colour|Whigs (British political party)}}

|Void election

|-

|Buckinghamshire

|28 December 1857

|Charles Compton Cavendish

| {{Party name with colour|Whigs (British political party)}}

|William George Cavendish

| {{Party name with colour|Whigs (British political party)}}

|Resignation and elevation to the peerage

|-

|Elgin Burghs

|19 December 1857

|George Skene Duff

| {{Party name with colour|Whigs (British political party)}}

|M. E. Grant Duff

| {{Party name with colour|Whigs (British political party)}}

|Resignation

|-

|Whitehaven

|17 December 1857

|Robert Charles Hildyard

| {{Party name with colour|Conservative Party (UK)}}

|George Lyall

| {{Party name with colour|Conservative Party (UK)}}

|Death

|-

|North Northamptonshire

|16 December 1857

|Augustus Stafford

| {{Party name with colour|Conservative Party (UK)}}

|George Ward Hunt

| {{Party name with colour|Conservative Party (UK)}}

|Death

|-

|Scarborough

|14 December 1857

|Earl of Mulgrave

| {{Party name with colour|Whigs (British political party)}}

|John Dent Dent

| {{Party name with colour|Whigs (British political party)}}

|Resignation

|-

|Ashton-under-Lyne

|14 December 1857

|Charles Hindley

| {{Party name with colour|Whigs (British political party)}}

|Thomas Milner Gibson

| {{Party name with colour|Whigs (British political party)}}

|Death

|-

|Paisley

|11 December 1857

|Archibald Hastie

| {{Party name with colour|Whigs (British political party)}}

|Humphrey Crum-Ewing

| {{Party name with colour|Whigs (British political party)}}

|Death

|-bgcolor=lightblue

|East Kent

|10 December 1857

|Sir Edward Dering

| {{Party name with colour|Whigs (British political party)}}

|William Deedes

| {{Party name with colour|Conservative Party (UK)}}

|Resignation

|-

|Thetford

|9 December 1857

|Francis Baring

| {{Party name with colour|Conservative Party (UK)}}

|Alexander Baring

| {{Party name with colour|Conservative Party (UK)}}

|Resignation

|-bgcolor=FFCC66

|Harwich

|9 December 1857

|George Drought Warburton

|{{Party name with color|Independent Whig|no_link=y}}{{cite DNB|wstitle=Warburton, George Drought|volume=59|last=Courtney|first=William Prideaux}}{{cite encyclopedia|author=Elizabeth Waterston|url=http://www.biographi.ca/en/bio/warburton_george_drought_8E.html|title= George Drought Warburton|encyclopedia=Dictionary of Canadian Biography}}

|Robert John Bagshaw

| {{Party name with colour|Whigs (British political party)}}

|Death

|-

|Oldham

|19 October 1857

|James Platt

| {{Party name with colour|Whigs (British political party)}}

|William Johnson Fox

| {{Party name with colour|Whigs (British political party)}}

|Death

|-

|Tavistock

|4 September 1857

|George Henry Charles Byng

| {{Party name with colour|Whigs (British political party)}}

|Lord Arthur Russell

| {{Party name with colour|Whigs (British political party)}}

|Resignation to contest Middlesex

|-

|Middlesex

|3 September 1857

|Lord Robert Grosvenor

| {{Party name with colour|Whigs (British political party)}}

|George Henry Charles Byng

| {{Party name with colour|Whigs (British political party)}}

|Elevation to the peerage

|-bgcolor=lightblue

|Beverley

|11 August 1857

|Edward Auchmuty Glover

| {{Party name with colour|Whigs (British political party)}}

|Henry Edwards

| {{Party name with colour|Conservative Party (UK)}}

|Void election

|-bgcolor=FFCC66

|rowspan=2|Great Yarmouth

|rowspan=2|10 August 1857

|William McCullagh Torrens

|{{Party name with color|Independent Whig|no_link=y}}{{cite book|editor1-last=Howe|editor1-first=Anthony|editor2-last=Morgan|editor2-first=Simon|editor3-last=Bannerman|editor3-first=Gordon|title=The Letters of Richard Cobden: Volume II ~ 1848–1853|date=2007|publisher=Oxford University Press|location=Oxford|isbn=978-0-19-921196-8|page=284}}{{cite DNB|volume=57|wstitle=Torrens, William Torrens McCullagh|last=MacDonagh|first=Michael}}{{cite book|last1=Eldridge|first1=C. C.|title=England's Mission: The Imperial Idea in the Age of Gladstone & Disraeli, 1868–1880|date=1973|publisher=Palgrave Macmillan|location=London|isbn=978-1-349-01879-6|page=118|chapter=England's Mission}}

|Adolphus William Young

| {{Party name with colour|Whigs (British political party)}}

|Void election

|-

|Edward Watkin

| {{Party name with colour|Whigs (British political party)}}

|John Mellor

| {{Party name with colour|Whigs (British political party)}}

|Void election

|-

|Birmingham

|10 August 1857

|George Frederic Muntz

| {{Party name with colour|Whigs (British political party)}}

|John Bright

| {{Party name with colour|Whigs (British political party)}}

|Death

|-

|Falkirk Burghs

|8 August 1857

|James Merry

| {{Party name with colour|Whigs (British political party)}}

|John Glencairn Carter Hamilton

| {{Party name with colour|Whigs (British political party)}}

|Void election

|-

|City of London

|28 July 1857

|Lionel de Rothschild

| {{Party name with colour|Whigs (British political party)}}

|Lionel de Rothschild

| {{Party name with colour|Whigs (British political party)}}

|Seeks re-election following the rejection of the Jewish Disabilities Bill

|-

|Woodstock

|24 July 1857

|Marquess of Blandford

| {{Party name with colour|Conservative Party (UK)}}

|Lord Alfred Spencer-Churchill

| {{Party name with colour|Conservative Party (UK)}}

|Succession to a peerage

|-

|Oxford

|21 July 1857

|Charles Neate

| {{Party name with colour|Whigs (British political party)}}

|Edward Cardwell

| {{Party name with colour|Peelite}}

|Void election

|-

|Banffshire

|30 June 1857

|The Earl Fife

| {{Party name with colour|Whigs (British political party)}}

|Lachlan Gordon-Duff

| {{Party name with colour|Whigs (British political party)}}

|Resignation

|-

|Carmarthenshire

|12 June 1857

|David Arthur Saunders Davies

| {{Party name with colour|Conservative Party (UK)}}

|David Pugh

| {{Party name with colour|Conservative Party (UK)}}

|Death

|-

|Kerry

|9 June 1857

|Henry Arthur Herbert

| {{Party name with colour|Whigs (British political party)}}

|Henry Arthur Herbert

| {{Party name with colour|Whigs (British political party)}}

|Chief Secretary for Ireland

|-

|Leeds

|5 June 1857

|Robert Hall

| {{Party name with colour|Conservative Party (UK)}}

|George Skirrow Beecroft

| {{Party name with colour|Conservative Party (UK)}}

|Death

|-

|Reading

|2 June 1857

|Henry Singer Keating

| {{Party name with colour|Whigs (British political party)}}

|Henry Singer Keating

| {{Party name with colour|Whigs (British political party)}}

|Solicitor General for England and Wales

|-

|Penryn and Falmouth

|27 May 1857An uncontested by-election.

|Thomas George Baring

| {{Party name with colour|Whigs (British political party)}}

|Thomas George Baring

| {{Party name with colour|Whigs (British political party)}}

|Civil Lord of the AdmiraltySeat vacated on appointment to the office noted.

|-

|colspan=10 |

|}

{{Reflist}}

• {{usurped|1=[https://web.archive.org/web/20080607022521/http://www.leighrayment.com/commons.htm List of MPs since 1660]}}
• British Parliamentary election Results 1832-1885, compiled and edited by F. W. S. Craig (Macmillan Press 1977)
• F. W. S. Craig, British Parliamentary election Statistics 1832-1987
• F. W. S. Craig, Chronology of British Parliamentary By-elections 1833-1987
• Parliamentary election Results in Ireland, 1801-1922, edited by B. M. Walker (Royal Irish Academy 1978)

{{United Kingdom by-elections}}

{{DEFAULTSORT:List of United Kingdom By-Elections (1857-1868)}}

1857

Category:19th century in the United Kingdom