The Rhondda West by-election, 1967 was a parliamentary by-election held in 1967 for the British House of Commons constituency of Rhondda West in Wales.
The seat had become vacant when the constituency's Labour Member of Parliament (MP), Iorwerth Rhys Thomas, died on 3 December 1966, aged 71. He had held the seat since the 1950 general election.
The result of the contest was a victory for the Labour candidate, Trevor Alec Jones, who won with a majority of 2,306 over the Plaid Cymru's Henry Davies.
Jones represented the constituency until his death in March 1983. No by-election was held because of the imminence of the 1983 general election.