South is a European Parliament constituency in Ireland. It elects 5 Members of the European Parliament (MEPs) using proportional representation by means of the single transferable vote.

It was created in 2004 with the same area as the old Munster constituency, except for County Clare which was then in North-West.^[1] It is commonly referred to as Ireland South.^[2] It was expanded in 2014 when it took in counties of southern Leinster from the disbanded East constituency and became a 4-seat constituency.^[3] In 2016, 74.1% of the constituency's population lived in Munster, while the southern Leinster counties accounted for 25.9%.^[4]

At the 2019 European Parliament election, a reapportionment following Brexit and the loss of 73 MEPs from the United Kingdom gave two additional seats to Ireland. Following a recommendation of the Constituency Commission, South gained territory and an additional seat, from 4 to 5.^[5][6][7] However, the last candidate elected, would not take her seat until after the United Kingdom left the European Union.^[8]

At the 2024 European Parliament election, the counties of Laois and Offaly will be transferred to Midlands–North-West, while South remains a 5-seat constituency.^[9] This followed a recommendation of the Electoral Commission, where Ireland had been allocated one additional MEP.^[10][11]

It comprises the counties of Carlow, Clare, Cork, Kerry, Kilkenny, Limerick, Tipperary, Waterford, Wexford, and Wicklow; the cities of Cork, Limerick, and Waterford.

The main urban areas (by population size) are Cork, Limerick, Waterford, Bray, Kilkenny, Ennis, Carlow, Tralee, and Wexford.

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.

^ *: Outgoing MEP elected at the previous election.
^ †: Outgoing MEP coopted subsequent to the previous election.