Belfast South and Mid Down (UK Parliament constituency)

Belfast South and Mid Down is a parliamentary constituency in the United Kingdom House of Commons.

Following the 2023 Periodic Review of Westminster constituencies, the seat of Belfast South was subject to boundary changes and renamed Belfast South and Mid Down. It was first contested at the 2024 United Kingdom general election.

The current MP is Claire Hanna (SDLP)

Boundaries
In time for the 2024 United Kingdom general election, the Boundary Commission for Northern Ireland recommended expanding the current seat to become Belfast South and Mid Down covering central Belfast, Finaghy, Drumbo, and Carryduff.

The constituency comprises twelve wards of Belfast City Council (Belvoir; Blackstaff; Central; Finaghy; Malone; Musgrave; Ormeau; Ravenhill; Rosetta; Stranmillis; Upper Malone; and Windsor)

- nine wards of Lisburn and Castlereagh City Council (Beechill; Cairnshill; Carryduff East; Carryduff West; Drumbo; Galwally; Knockbracken; Moneyreagh; and Newtownbreda)

- one ward of Newry, Mourne and Down District Council (Saintfield).