Torfaen is a constituency[n 1] in Wales represented in the House of Commons of the UK Parliament since 2015 by Nick Thomas-Symonds, a member of the Labour Party who also serves as the Paymaster General and Minister for the Cabinet Office under the government of Keir Starmer.

The constituency was to retain its name and gain wards, 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 2024 United Kingdom general election.

However, 2019 saw the lowest Labour majority in Torfaen in the seat's history, of only 3,742 votes, in part due to 60.8% of voters choosing the Leave vote in the 2016 EU membership referendum.

[3] In the 2024 United Kingdom general election Labour increased their majority to 7,322 votes.

The area covers the new town of Cwmbran, Pontypool, and its surrounding districts and stretches as far north as Blaenavon.