Aberdare by-election, 1954

The Aberdare by-election, 1954 was a parliamentary by-election held on 28 October 1954 for the British House of Commons constituency of Aberdare in Wales. The seat had become vacant when the Labour Member of Parliament (MP) David Thomas had died on 20 June 1954. Thomas had held the seat since a 1946 by-election. The Labour candidate, Arthur Probert held the seat for the party. He remained the constituency's MP until his retirement at the February 1974 general election.