Dublin South-West (Dáil Éireann constituency)

Dublin South-West
Dáil Éireann Parliamentary Constituency
Location of Dublin South-West within County Dublin
Current constituency
Created	1981
Seats	4 (1981–1992) 5 (1992–2002) 4 (2002–2016) 5 (2016–)
TDs	Colm Brophy (FG)      Katherine Zappone (Ind)      Paul Murphy (AAA–PBP)      Seán Crowe (SF)      John Lahart (FF)
County council	South Dublin County Council
EP constituency	Dublin

Dublin South-West is a parliamentary constituency represented in Dáil Éireann, the lower house of the Irish parliament or Oireachtas. The constituency elects 5 deputies (Teachtaí Dála, commonly known as TDs). The method of election is the single transferable vote form of proportional representation (PR-STV).

The constituency is located in the southern part of South Dublin county. One of this name was first created in the 1940s and was used for elections from 1948 to 1973 inclusive. The original constituency was based around the areas of Ballyfermot, Crumlin and Kilmainham. The constituency was then abolished and was mostly replaced by the Dublin Ballyfermot constituency. In its current incarnation the seat was created in 1981 and had completely different boundaries from the original pre-1977 constituency, being based around the areas of Clondalkin, Newcastle, Rathcoole, Saggart, Tallaght, Templeogue, and parts of Terenure.

In 1998, it was reduced in size and electorate, losing territory—including Newcastle, Rathcoole, Saggart and Clondalkin—to the new Dublin Mid-West seat. Major areas today include Rathfarnham, Tallaght, and Templeogue, with the surrounding suburbs of Ballyboden, Ballyroan, Butterfield, Firhouse, Greenhills, Knocklyon, Willbrook, and parts of Terenure. At the 2016 general election, it gained a seat to become a five-seater and part of Dublin South, around Rathfarnham, was added to it.