Dublin South-East was a parliamentary constituency represented in Dáil Éireann, the lower house of the Irish parliament or Oireachtas, from 1948 to 2016.

The method of election was proportional representation by means of the single transferable vote (PR-STV).

[22][23] Notable Dublin South-East TDs include former Taoiseach John A. Costello and Garret FitzGerald, the former leader of the Progressive Democrats Michael McDowell, maverick left-wing politician Noël Browne and former Minister for Finance Ruairi Quinn (who was its longest-serving TD, first elected in 1977 and serving continuously from February 1982 until his retirement in 2016).

Mary McAleese, a former president of Ireland, unsuccessfully contested the constituency for Fianna Fáil in 1987.

The 1997 result led to a mammoth recount, the longest in Irish political history, before McDowell conceded defeat.