Longwick

{{Short description|Village in Buckinghamshire, England}}

{{Use dmy dates|date=October 2019}}

{{Use British English|date=June 2025}}

{{Infobox UK place

|country= England

|coordinates = {{coord|51.736|-0.857|display=inline,title}}

|static_image= Pasture, Longwick - geograph.org.uk - 2233513.jpg

|static_image_caption= Pasture, Longwick, 2010

|official_name= Longwick

|population= 1,267

|population_ref= [http://www.neighbourhood.statistics.gov.uk/dissemination/LeadTableView.do?a=7&b=792162&c=Longwick&d=16&e=15&g=425256&i=1001x1003x1004&m=0&r=1&s=1216513235108&enc=1&dsFamilyId=779 Neighbourhood Statistics 2001 Census]
1,347 (2011 Census. parish){{cite web |url=http://www.neighbourhood.statistics.gov.uk/dissemination/LeadKeyFigures.do?a=7&b=11124959&c=Ibstone&d=16&e=62&g=6404839&i=1001x1003x1032x1004&m=0&r=1&s=1479899243071&enc=1|title=Civil Parish population 2011|accessdate=23 November 2016|publisher=Office for National Statistics |work=Neighbourhood Statistics}}

|civil_parish= Longwick-cum-Ilmer

|unitary_england = Buckinghamshire

|lieutenancy_england = Buckinghamshire

|region= South East England

|constituency_westminster= Mid Buckinghamshire{{cite web|title=Location of Mid Buckinghamshire |url= https://members.parliament.uk/constituency/4175/location |website=parliament.uk |date=July 2024 |access-date=1 July 2025}}

|post_town=Princes Risborough

|postcode_district = HP27

|postcode_area= HP

|dial_code= 01844

|os_grid_reference= SP7805

|website=

}}

Longwick is a village {{convert|1+1/4|mi|km|0}} northwest of Princes Risborough, Buckinghamshire, England, on the A4129 road.

File:Roman gold polygonal finger-ring (FindID 986782).jpg gold finger ring, dated to {{circa|200|300}} CE and found in Longwick-cum-Ilmer in 2019{{cite web |url= https://finds.org.uk/database/artefacts/record/id/986782 |title= Finds record for: BH-348FD3 |author= Fittock, M. |access-date= 7 September 2022 |publisher= The Portable Antiquities Scheme}}]]

The toponym is from the Old English for "long farm".{{Citation needed|date=September 2009}}

With Ilmer, Owlswick, Meadle and Horsenden, it forms the civil parish of Longwick-cum-Ilmer which was created in 1934. In 1951 its population was 786,{{Citation needed|date=September 2009}} since when it has increased significantly to 1,267 in 2001.

Longwick was the location for the Sunrise/Back to the Future Acid House party on 12 August 1989.{{Citation needed|date=February 2011}}

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