Sligo–Leitrim is a parliamentary constituency that has been represented in Dáil Éireann, the lower house of the Irish parliament or Oireachtas, from the 2016 general election. The constituency elects 4 deputies (Teachtaí Dála, commonly known as TDs) on the system of proportional representation by means of the single transferable vote (PR-STV). The constituency previously existed from 1923 to 1937 (then titled Leitrim–Sligo) and from 1948 to 2007.