List of American and Canadian football leagues

This is a list of current and defunct leagues of American football and Canadian football. == Leagues in North America == === Current professional leagues in North America === ==== Professional outdoor leagues ==== Major: National Football League (NFL), 1920– Originally American Professional Football Association (1920–1921) Merged with the All-America Football Conference (1946-1949) and with the American Football League (1960–69) Canadian Football League (CFL), 1958– Formed from Interprovincial Rugby Football Union (1909) and Western Interprovincial Football Union (1936).

Source: Wikipedia — List of American and Canadian football leagues (CC BY-SA 4.0)