Serie A de México
The Serie A has 28 teams divided into two groups. For the 2020–21 season, it will be one long tournament consisting of 28 total matches played home and away. The top 4 teams from each group at the end of the season will play for promotion to Ascenso MX provided that their stadiums meet the requirements to ascend.
The Serie A was created in the second half of 2008, with the participation and approval of the owners of the teams of the Second and Third Division, being next to Serie B part of the Liga Premier.
As of the 2020–21 Season, Atletico San Luis from Liga MX and 3 Ascenso MX teams will join the Liga Premier to give young players professional experience.
Teams for 2020–21 season
The member clubs of the Serie A for the 2020–21 season are listed as follows. There are provisional teams, awaiting confirmation from the League. Two Serie A teams been promoted to Liga de Expansión MX, in addition, other clubs may not participate this season.Group 1
Stadium and locations
| Club | Manager | City | Stadium | Capacity | Affiliate |
| Alacranes de Durango |  Héctor Jair Real | Durango City, Durango | Francisco Zarco | 18,000 | — |
| Atlético San Luis | Luis Francisco García | San Luis Potosí City, San Luis Potosí | Plan de San Luis | 18,000 | Atlético San Luis |
| Atlético Reynosa | Gastón Obledo | Reynosa, Tamaulipas | Unidad Deportiva Solidaridad | 20,000 | — |
| CAFESSA Jalisco | Omar Briceño | Guadalajara, Jalisco | Jalisco | 55,110 | — |
| Cimarrones de Sonora | José Islas | Hermosillo, Sonora | Héroe de Nacozari | 18,747 | Cimarrones de Sonora |
| Colima | Vacant | Colima City, Colima | Olímpico Universitario de Colima | 11,812 | — |
| Correcaminos UAT | Vacant | Ciudad Victoria, Tamaulipas | Marte R. Gómez | 10,520 | Correcaminos UAT |
| Gavilanes de Matamoros | Jorge Martínez Merino | Matamoros, Tamaulipas | El Hogar | 22,000 | — |
| Leones Negros UdeG | Vacant | Zapopan, Jalisco | Instalaciones Club Deportivo U.de G. Cancha 3 | 3,000 | Leones Negros UdeG |
| Mazorqueros | Mario Trejo | Ciudad Guzmán, Jalisco | Municipal Santa Rosa | 3,500 | — |
| Mineros de Fresnillo | Joaquín Espinoza | Fresnillo, Zacatecas | Unidad Deportiva Minera Fresnillo | 6,000 | — |
| Saltillo | Ricardo López | Saltillo, Coahuila | Olímpico Francisco I. Madero | 7,000 | — |
| Tecos | Daniel Alcántar | Zapopan, Jalisco | Tres de Marzo | 18,779 | — |
| Tuzos UAZ | Rubén Hernández | Zacatecas City, Zacatecas | Carlos Vega Villalba | 20,068 | — |
Standings G1
Group 2
Stadium and locations
| Club | Manager | City | Stadium | Capacity | Affiliate |
| Aguacateros CDU | José Roberto Muñoz | Uruapan, Michoacán | Unidad Deportiva Hermanos López Rayón | 5,000 | — |
| Azores de Hidalgo | Vacant | Apan, Hidalgo | Unidad Deportiva Ángel Lozada | TBA | — |
| Cafetaleros de Chiapas | Miguel Ángel Casanova | Tuxtla Gutiérrez, Chiapas | Víctor Manuel Reyna | 29,001 | — |
| Cañoneros Marina | José Gerardo Espinoza | Milpa Alta, Mexico City | Momoxco | 3,500 | — |
| Ciervos | Pablo Robles | Chalco de Díaz Covarrubias, State of Mexico | Arreola | 2,000 | — |
| Cruz Azul Hidalgo | Carlos Roberto Pérez | Ciudad Cooperativa Cruz Azul, Hidalgo | 10 de Diciembre | 14,500 | Cruz Azul |
| Cuervos de Silver Soccer | Vacant | Xochimilco, Mexico City | San Isidro | 2,000 | — |
| Dongu | René Fuentes | Cuautitlán, State of Mexico | Los Pinos | 5,000 | — |
| Héroes de Zaci | Vacant | Venustiano Carranza, Mexico City | Deportivo Lázaro Cárdenas | 1,000 | — |
| Inter Playa del Carmen | Carlos Bracamontes | Playa del Carmen, Quintana Roo | Unidad Deportiva Mario Villanueva Madrid | 7,500 | — |
| Irapuato | Juan Manuel Rivera | Irapuato, Guanajuato | Sergio León Chávez | 25,000 | — |
| La Piedad | Jorge Guerrero | La Piedad, Michoacán | Juan N. López | 13,356 | — |
| Pioneros de Cancún | Daniel Moguel Hernández | Cancún, Quintana Roo | Andrés Quintana Roo | 17,289 | — |
| Zitácuaro | José Raúl Montes | Zitácuaro, Michoacán | Ignacio López Rayón | 10,000 | — |
Standings G2
To be confirmed
After they announced the groups for the 2020-21 season and after a delete of posts on social media, there's a possibility the league will add one additional team in each group to 15. Both teams has to pay the fines by July 31 to be eligible to participate.| Club | Manager | City | Stadium | Capacity |
| La Paz | Isaac Martínez | La Paz, Baja California Sur | Guaycura | 5,209 |
| Cuautla | Carlos Ramón Figueroa | Cuautla, Morelos | Isidro Gil Tapia | 5,000 |
Teams on hiatus
Disaffiliated teams
Offseason Changes
- UNAM Premier has discontinued their participation in Serie A to participate in the new Liga de Expansión MX.
- Atlético Bahía, Coras de Nayarit, Murciélagos, Sporting Canamy, UACH and Yalmakán were put on hiatus for the 2020–21 season due to financial issues due to COVID-19.
- Cafetaleros de Chiapas Premier renamed to Cafetaleros de Chiapas, will stay in Chiapas and will become their Primary Team after their Ascenso MX Team moved to Cancun.
- Tepatitlán and Tlaxcala have been certified and promoted to the Liga de Expansión MX, while Atlético Reynosa did not get certified due to stadium issues.
- Colima F.C., Mazorqueros F.C. and Cuervos de Silver Soccer joins in Serie A as expansion teams.
- Aguacateros CDU, Ciervos, Cuautla, Dongu, La Paz and Zitácuaro joins in Serie A as expansion teams from Serie B.
- Real Zamora returns from hiatus but they were relocated and renamed as Azores de Hidalgo.
- Héroes de Zací joins in Serie A after being approved after a one year hold due to stadium requirements were not met.
- Atlético Irapuato was renamed as Irapuato A.C. due to due to changes in club ownership.