Sam Carr was an organizer for the Communist Party of Canada and its successor, the Labor-Progressive Party, in the 1930s and 1940s. He was born Schmil Kogan in Tomashpil, Ukraine, in 1906 and immigrated to Canada in 1924, living in Winnipeg and Regina before settling in Montreal in 1925. Carr became an organizer for the Young Communist League with Fred Rose.