This is a list of Canadian Football League (CFL) seasons, including seasons in Canadian football prior to the CFL's founding in 1958.
After the merger of the Big Four and WIFU, the first 29 CFL seasons each consisted of nine teams playing in the same nine cities.
[1] In 1961, inter-conference play began during the regular season.
Until 1973, Western Canadian teams played 16 games, while Eastern Canadian teams played 14 games.
Since 1987, the number of teams has changed several times, but the CFL has retained an 18 game schedule.