1739 in Ireland

• Monarch: George II

• 27 April – the trial of Henry Barry, 4th Baron Barry of Santry, before the Irish House of Lords for the drunken murder of a tavern servant in Palmerstown the previous summer opens; he is convicted but later pardoned.
• July–August – wet summer, affecting the harvest and the cutting of turf.{{cite book|editor=Moody, T. W.|title=A New History of Ireland. 8: A Chronology of Irish History|publisher=Oxford University Press|year=1989|isbn=978-0-19-821744-2|display-editors=etal}}
• 26 September – "Address of the Roman Catholics of Ireland" to George II of Great Britain requesting longer leases.
• 6 October – the title Earl of Bessborough is created in the Peerage of Ireland in favour of Brabazon Ponsonby, 2nd Viscount Duncannon, chief commissioner of revenue.
• 27 December–February 1740 – the 'Great Frost': unusually harsh winter.{{cite book|last=Palmer|first=Alan|last2=Palmer |first2=Veronica|year=1992|title=The Chronology of British History|publisher=Century Ltd|location=London|pages=215–216|isbn=0-7126-5616-2}}

• 27 September – Robert Stewart, 1st Marquess of Londonderry, politician (d. 1821)
• 31 October – James Gordon, merchant, soldier, and politician in America (d. 1810)

Full date unknown

• Judge Fulton, judge, surveyor, politician, and founder of the village of Bass River, Nova Scotia (d. 1826)
• Hugh Kelly, dramatist and poet (d. 1777)
• Hugh O'Reilly, Roman Catholic Bishop of Clogher (d. 1801)

• Charles Jervas, painter, translator and art collector (b. c.1675)

{{reflist}}

{{Years in Ireland}}

{{Year in Europe|1739}}

{{DEFAULTSORT:1739 In Ireland}}

Category:Years of the 18th century in Ireland

Ireland

Category:1730s in Ireland