Swansea West (Welsh: Gorllewin Abertawe) is a constituency^{[n 1]} of the House of Commons of the Parliament of the United Kingdom. It elects one Member of Parliament (MP) by the first past the post system of election, and is currently represented by Geraint Davies of Labour Co-op, who was first elected in the constituency in 2010.

The Senedd constituency of the same name presently has the same boundaries.

Alan Williams represented the seat for the Labour Party from 1964 until his retirement in 2010; from 2005 until his retirement he was the Father of the House (meaning longest-serving MP currently sitting).

The constituency is to retain its name but its boundaries altered, as part of the 2023 Periodic Review of Westminster constituencies and under the June 2023 final recommendations of the Boundary Commission for Wales for the next United Kingdom general election.^[2]

The constituency comprises the electoral wards of Sketty, Castle, Killay South, Killay North, Dunvant, Uplands, Townhill, Cockett and Mayals.

1918–1949: The County Borough of Swansea wards of Alexandra, Bryn Melyn, Castle, Ffynone, St Helen's, and Victoria.

1950–1955: The County Borough of Swansea wards of Brynmelyn, Cockett, Ffynone, Oystermouth and Brynau, St Helen's, Sketty, Victoria, and Waunarlwydd.

1955–1983: The County Borough of Swansea wards of Brynmelin, Fforestfach, Ffynone, Mumbles, St Helen's, Sketty, Townhill, and Victoria.^[3]

• Swansea West (Senedd constituency)
• List of parliamentary constituencies in West Glamorgan
• List of parliamentary constituencies in Wales