1990–91 Mexican Primera División season
These are statistics of Primera División de México for the 1990–91 season.
Overview
It was contested by 20 teams, and Pumas de la UNAM won the championship.León was promoted from Segunda División.
Querétaro bought the franchise of Tampico Madero, which allowed the team to return to Primera División.
Irapauto was relegated to Segunda División.
Teams
| Team | City | Stadium | - |
| América | Mexico City | Azteca | - |
| Atlas | Guadalajara, Jalisco | Jalisco | - |
| Cobras | Ciudad Juárez, Chihuahua | Olímpico Benito Juárez | - |
| Cruz Azul | Mexico City | Azteca | - |
| Guadalajara | Guadalajara, Jalisco | Jalisco | - |
| León | León, Guanajuato | Nou Camp | - |
| Irapuato | Irapuato, Guanajuato | Irapuato | - |
| Morelia | Morelia, Michoacán | Morelos | - |
| Monterrey | Monterrey, Nuevo León | Tecnológico | - |
| Necaxa | Mexico City | Azteca | - |
| Puebla | Puebla, Puebla | Cuauhtémoc | - |
| Querétaro | Querétaro, Querétaro | Corregidora | - |
| Santos Laguna | Torreón, Coahuila | Corona | - |
| Tecos | Zapopan, Jalisco | Tres de Marzo | - |
| Toluca | Toluca, State of Mexico | Toluca 70-86 | - |
| UANL | Monterrey, Nuevo León | Universitario | - |
| UAT | Ciudad Victoria, Tamaulipas | Estadio Marte R. Gómez | - |
| UdeG | Guadalajara, Jalisco | Jalisco | - |
| UNAM | Mexico City | Olímpico Universitario | - |
| Veracruz | Veracruz, Veracruz | Luis "Pirata" Fuente |
Group stage
Group 1
Group 2
Group 3
Group 4
Results
Playoff
Final
3-3 on aggregate. UNAM won on away goals.----