The 1938 Irish general election to the 10th Dáil was held on Friday, 17 June following the dissolution of the 9th Dáil on 27 May 1938 by the Presidential Commission on the request of Taoiseach Éamon de Valera. It was a snap election, less than a year after the previous election, the proximate cause being the government's loss of an opposition motion recommending use of arbitration to resolve Civil Service labour disputes. The general election took place in 34 parliamentary constituencies throughout Ireland for 138 seats in Dáil Éireann. It was the first election held after the coming into force of the Constitution of Ireland on 29 December 1937. Fianna Fáil won the first overall majority in the history of the State.

The Taoiseach is the head of government or prime minister of Ireland. The office is appointed by the President of Ireland upon the nomination of Dáil Éireann and the office-holder must retain the support of a majority in the Dáil to remain in office.