List of MPs for constituencies in Wales (1964–1966)

This is a list of members of Parliament (MPs) elected to the House of Commons of the United Kingdom by Welsh constituencies for the Forty-Third Parliament of the United Kingdom (1964–1966).

Most MPs elected for Welsh constituencies at the 1964 United Kingdom general election, held on 15 October 1964, served a full term, apart from Labour MP Llywelyn Williams who died in 1965.

The list is sorted by the name of the MP.

By-elections
There was one by-election during this period:


 * 1965 Abertillery by-election was won by Labour MP Clifford Williams