| Competition: | Segunda División de México |
| Season: | 1970–71 |
| Winners: | San Luis (1st Title) |
| Matches: | 272 |
| Total Goals: | 676 |
| League Topscorer: | Marino Guevara (22 goals) |
| Promoted: | San Luis Atlético Cuernavaca Cuautla Querétaro Universidad Veracruzana |
| Relegated: | Nuevo León |
| Prevseason: | México 1970 |
| Nextseason: | 1971–72 |
The 1970–71 Segunda División was the 22nd season of the Mexican Segunda División. The season started on 19 December 1970 and concluded on 8 August 1971. It was won by San Luis, which was the first team to win the Segunda división one year after being promoted from Tercera División.[1]
| Club | City | Stadium | |
|---|---|---|---|
| Atlético Cuernavaca | Cuernavaca | Estadio Centenario | |
| Cuautla | Cuautla | Estadio Isidro Gil Tapia | |
| La Piedad | La Piedad | Estadio Juan N. López | |
| Ciudad Madero | Ciudad Madero | Estadio Tamaulipas | |
| Morelia | Morelia | Estadio Venustiano Carranza | |
| Nacional | Guadalajara | Estadio Jalisco | |
| Naucalpan | Naucalpan | Unidad Cuauhtémoc | |
| Nuevo León | Monterrey | Estadio Tecnológico | |
| Querétaro | Querétaro City | Estadio Municipal de Querétaro | |
| Salamanca | Salamanca | Estadio El Molinito | |
| San Luis | San Luis Potosí City | Estadio Plan de San Luis | |
| Tampico | Tampico | Estadio Tamaulipas | |
| Tepic | Tepic | Estadio Nicolás Álvarez Ortega | |
| Unión de Curtidores | León | Estadio La Martinica | |
| UANL | Monterrey | Estadio Universitario | |
| Universidad Veracruzana | Xalapa | Estadio Antonio M. Quirasco | |
| Ciudad Victoria | Ciudad Victoria | Estadio Marte R. Gómez | |
| Zamora | Zamora | Estadio Moctezuma |