Pontypridd by election, 1922

The Pontypridd by-election of 1922 was held on 25 July 1922. The by-election was held due to the appointed of the incumbent Coalition Liberal MP, Thomas Arthur Lewis, as a Junior Lord of the Treasury. It was won by the Labour candidate Thomas Isaac Mardy Jones. It was one of only eight ministerial by-elections in the UK not to be retained by the incumbent.