| Competition: | Primera División de México |
| Season: | 1970–71 |
| Winners: | América (2nd title) |
| Relegated: | Atlas |
| Continentalcup1: | Champions' Cup |
| Continentalcup1 Qualifiers: | América Toluca |
| Matches: | 311 |
| Total Goals: | 717 |
| Prevseason: | México 1970 |
| Nextseason: | 1971–72 |
Statistics of the Primera División de México for the 1970–71 season.
Zacatepec was promoted to Primera División (Segunda División 1969–70 Champion)
Puebla was also promoted to Primera División (winner of promotional tournament between Unión de Curtidores, Nacional and Naucalpan) to increase the number of teams to 18.
The season was contested by 18 teams, and America won the championship.
Atlas was relegated to Segunda División.
After this season Necaxa was sold and changed its name to Atlético Español.
Cruz Azul moves to Mexico City.
Aggregate score tied so a 3rd match will be played
Pachuca won on aggregate 5-3. Atlas was relegated to Segunda Division
America won on aggregate 2-0----