Dublin South-Central is a parliamentary constituency represented in Dáil Éireann, the lower house of the Irish parliament or Oireachtas. 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 comprises Ballyfermot, Bluebell, Crumlin, Drimnagh, Dolphin's Barn, the Liberties, Chapelizod, Walkinstown and parts of Terenure on the fringes. The largest employers in the area are the Guinness Brewery and St. James's Hospital. Dubbed the "People's republic of Dublin South-Central,^[1] the constituency is one of the country's most left-wing,^[2] with all of the TDs from centre-left or left-wing parties.^[3] Both Labour Party TDs elected in 2011 had previously been members of other left-wing parties: Eric Byrne was a former member of the Workers' Party and Democratic Left, and Michael Conaghan had stood in a number of elections for Jim Kemmy's Democratic Socialist Party.

A constituency of this name was created by the Electoral (Amendment) Act 1947 containing the Mansion House, Merchants' Quay, Royal Exchange, St. Kevin's, South Dock, Usher's and Wood Quay wards of Dublin.^[4] Its boundaries changed considerably over the years, generally moving to the west within the city.

Under the Electoral (Amendment) Act 2005, which took effect at the 2007 general election, the constituency boundary was extended to the north side of the River Liffey, taking in Islandbridge.^[5] It is now located near the centre of Dublin city, and also contains part of South Dublin. The constituency comprises Harold's Cross west, Drimnagh, Walkinstown, Crumlin, Inchicore, Ballyfermot and Kimmage.^[6]

The Electoral (Amendment) (Dáil Constituencies) Act 2017 defines the constituency as:^[7]

"In the city of Dublin the electoral divisions of:

Carna, Chapelizod, Cherry-Orchard A, Cherry-Orchard C, Crumlin A, Crumlin B, Crumlin C, Crumlin D, Crumlin E, Crumlin F, Decies, Drumfinn, Inchicore A, Inchicore B, Kilmainham A, Kilmainham B, Kilmainham C, Kimmage A, Kimmage B, Kimmage D, Kimmage E, Kylemore, Merchants Quay A, Merchants Quay B, Merchants Quay C, Merchants Quay D, Merchants Quay E, Merchants Quay F, Ushers A, Ushers B, Ushers C, Ushers D, Ushers E, Ushers F, Walkinstown A, Walkinstown B, Walkinstown C;

and that part of the electoral division of Phoenix Park situated south of a line drawn along Chapelizod Road, Conyngham Road and Parkgate Street;

and, in the county of South Dublin, the electoral divisions of:

Templeogue-Kimmage Manor, Terenure-Cherryfield, Terenure-Greentrees;

and those parts of the electoral divisions of Clondalkin-Ballymount, Clondalkin-Monastery and Tallaght-Kilnamanagh situated east of a line drawn along the M50 Western Parkway."

The Constituency Review Report 2023 of the Electoral Commission recommended that at the next general election Dublin South-Central be altered by the transfer of territory from Dublin Bay South and the transfer of territory to Dublin Mid-West and Dublin South-West.^[8][9]

For the next general election, the Electoral (Amendment) Act 2023 defines the constituency as:^[10]

"In the city of Dublin, the electoral divisions of:

Carna, Chapelizod, Cherry-Orchard A, Cherry-Orchard C, Crumlin A, Crumlin B, Crumlin C, Crumlin D, Crumlin E, Crumlin F, Decies, Drumfinn, Inchicore A, Inchicore B, Kilmainham A, Kilmainham B, Kilmainham C, Kimmage A, Kimmage B, Kimmage C, Kimmage D, Kimmage E, Kylemore, Merchants Quay A, Merchants Quay B, Merchants Quay C, Merchants Quay D, Merchants Quay E, Merchants Quay F, Ushers A, Ushers B, Ushers C, Ushers D, Ushers E, Ushers F, Walkinstown A, Walkinstown B, Walkinstown C;

and that part of the electoral division of Phoenix Park situated south of a line drawn along Chapelizod Road, Conyngham Road and Parkgate Street."

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.