The Interim Committee on Un-American Activities or Joint Legislative Committee on Un-American Activities, most commonly known as the Canwell Committee, (1947-1949) was a special investigative committee of the Washington State Legislature which in 1948 investigated the influence of the Communist Party USA in Washington state. Named after its chairman, Albert F. Canwell, the committee concentrated upon communist influence in the Washington Commonwealth Federation and its relationship to the Democratic Party in Washington, as well alleged Communist Party membership of certain faculty members at the University of Washington in Seattle.