Merthyr (UK Parliament constituency)

Merthyr
Former Borough constituency for the House of Commons
1918–1950
Number of members	one
Replaced by	Merthyr Tydfil
Created from	Merthyr Tydfil

Merthyr was a borough constituency centred on the town of Merthyr Tydfil in Wales. It returned one Member of Parliament to the House of Commons of the Parliament of the United Kingdom.

The constituency was created for the 1918 general election, and abolished for the 1950 general election, when it was largely replaced by the new constituency of Merthyr Tydfil.

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