Aberavon (Welsh: Aberafan) was a constituency in Wales in the House of Commons of the Parliament of the United Kingdom.

[2] The constituency was created for the 1918 general election by the dividing of the Swansea District.

2010–2024: The Neath Port Talbot County Borough electoral divisions of Aberavon, Baglan, Briton Ferry East, Briton Ferry West, Bryn and Cwmavon, Coedffranc Central, Coedffranc North, Coedffranc West, Cymmer, Glyncorrwg, Gwynfi, Margam, Port Talbot, Sandfields East, Sandfields West, and Tai-bach.

The constituency was in South Wales, situated on the right bank of the River Afan, near its mouth in Swansea Bay.

Commenting on the 1983 boundary changes to the constituency when moving the 2000 Loyal Address of the Blair Government in Parliament, the seat's then-MP Sir John Morris, who would retire at the 2001 general election, said: "It is a happy tradition on this occasion to refer to one's constituency and to the people who sent one here....Whatever may occur in future, I would deplore the loss of the Member-constituency link.