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Current Major Leagues
| League | Sport | Franchises | First Season |
| Canadian Football League | Canadian football | Nine | 1981 |
| Major League Baseball | Baseball | 30 | 2000 |
| Major League Rugby | Rugby union | 12 | 2018 |
| Major League Soccer | Association football | 30 | 1996 |
| National Basketball Association | Basketball | 30 | 1949-50 |
| National Football League | American football | 32 | 1920 |
| National Hockey League | Ice hockey | 32 | 1917-18 |
| National Lacrosse League | Box lacrosse | 15 | 1998 |
| National Women's Soccer League | Women's association football | 15 | 2013 |
| Pro Volleyball Federation | Women's indoor volleyball | 10 | 2024 |
| Professional Women's Hockey League | Women's ice hockey | Six | 2024 |
| Women's National Basketball Association | Women's basketball | 13 | 1997 |