| Founded | 1922 |
|---|---|
| Folded | 1943 |
| Country | Mexico |
| Number of teams | 18 |
| Level on pyramid | 1 |
| Domestic cup(s) | Copa México (1932–1942) |
| Most championships | RC España (6 titles) |
Campeonato de Primera Fuerza (English: First Force Championship), later known as Liga Mayor (English: Major League), was an amateur football league founded by the first football governing body formed in Mexico after the merger of the Liga Mexicana and Liga Nacional, it was called Federación Mexicana de Football Asociación (English: Mexican Association Football Federation). Asturias FC won the inaugural season and CD Marte were the last champions. It had the total participation of 18 teams, of which only 2 teams played their matches outside of Mexico City. The league was held from 1922 to 1943, when the first true national and professional league was started.