Athlone–Longford was a parliamentary constituency represented in Dáil Éireann, the lower house of the Irish parliament or Oireachtas from 1937 to 1948.
The constituency elected 3 deputies (Teachtaí Dála, commonly known as TDs) to the Dáil, on the system of proportional representation by means of the single transferable vote (PR-STV).
Under the Electoral (Amendment) Act 1947, the constituency was abolished, and the Longford–Westmeath constituency was re-created for the 1948 general election.
In the 1935 Act, its boundaries were defined as:[1] The district electoral divisions of: The district electoral divisions of: Note: The columns in this table are used only for presentational purposes, and no significance should be attached to the order of columns.
For details of the order in which seats were won at each election, see the detailed results of that election.