South Dublin (UK Parliament constituency)

South Dublin, a division of County Dublin, was a county constituency in Ireland from 1885 to 1922. It elected one Member of Parliament (MP) to the House of Commons of the Parliament of the United Kingdom, using the first past the post voting system.

Prior to the 1885 general election the area was part of the County Dublin constituency. From 1918 to 1921, it was also used as a constituency for Dáil Éireann. From the dissolution of 1922, shortly before the establishment of the Irish Free State, the area was not represented in the UK Parliament.