Tipperary South is a parliamentary constituency represented in Dáil Éireann, the lower house of the Irish parliament or Oireachtas.

The constituency elects three deputies (Teachtaí Dála, commonly known as TDs) on the system of proportional representation by means of the single transferable vote (PR-STV).

2, the electoral divisions of: Kilmacomma, Kilronan, and the townlands of: Barravakeen, Bawnard, Boola, Carrickabrone, Coolishal, Derrinlaur Lower, Derrinlaur Upper, Glendaw, Gurteen Lower, Gurteen Upper, Lisheen, Tikincor Lower, Tikincor Upper, in the electoral division of Gurteen; the electoral divisions of: Ballysheehan, Clogher, Clonoulty East, Clonoulty West, Gaile, Graystown, Killenaule, Nodstown, in the former Rural District of Cashel; Ballyphilip, Buolick, Crohane, Farranrory, Fennor, Kilcooly, New Birmingham, Poyntstown, in the former Rural District of Slievardagh.

Seán Treacy was Ceann Comhairle at the dissolution of the 26th Dáil and therefore deemed to be returned automatically.

Seán Treacy was Ceann Comhairle at the dissolution of the 25th Dáil and therefore deemed to be returned automatically.