Swansea East (Welsh: Dwyrain Abertawe) was a borough constituency[n 1] in Wales in the House of Commons of the Parliament of the United Kingdom.

[n 2] As part of the 2023 Periodic Review of Westminster constituencies and under the June 2023 final recommendations of the Boundary Commission for Wales, the seat was abolished.

[2] 1918–1949: The County Borough of Swansea wards of East, Landore, Morriston, and St John's.

[3] 1983-2024: The City of Swansea wards of Bonymaen, Cwmbwrla, Landore, Llansamlet, Morriston, Mynydd-Bach, Penderry and St. Thomas.

Although the constituency voted strongly to leave the European Union in 2016, an analysis of YouGov polling by Focaldata suggested support for Remain had risen from 37.9% to 50.7% in August 2018.