List of MPs for constituencies in Wales (1966–1970)

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-Fourth Parliament of the United Kingdom (1966–1970).

Most MPs elected for Welsh constituencies at the 1966 United Kingdom general election, held on 31 March 1966, served a full term but there were three by-elections.

The list is sorted by the name of the MP.

By-elections
There were three by-elections during this period:


 * 1966 Carmarthen by-election won by Gwynfor Evans, the first ever Plaid Cymru Member of Parliament
 * 1967 Rhondda West by-election won by Labour candidate Alec Jones
 * 1968 Caerphilly by-election won by Labour candidate Alfred Evans