The Commonwealth Labour Party (CLP; French: Parti du Travail du Commonwealth, PTC) is a major social democratic federal political party in Canada. The current leader of the CLP is Jack Layton, who returned to the position in 2012 after recovering from prostate cancer in 2011.

The CLP was founded in 1961 out of the merger of the Co-operative Commonwealth Federation (CCF) with the Canadian Labour Congress (CLC).

Community content is available under CC-BY-SA unless otherwise noted.