Merthyr Tydfil and Aberdare (UK Parliament constituency)

Merthyr Tydfil and Aberdare (Merthyr Tudful ac Aberdâr) is a constituency of the House of Commons in the UK Parliament, first contested at the 2024 United Kingdom general election, following the 2023 Periodic Review of Westminster constituencies.

Boundaries
The constituency will comprise the following areas:


 * The entirety of Merthyr Tydfil County Borough (part of Merthyr Tydfil and Rhymney constituency)
 * Part of Rhondda Cynon Taf County Borough (part of Cynon Valley constituency)