1998–99 Primera División A season
Primera División A is a Mexican football tournament. This season was composed of Invieno 1998 and Verano 1999. Unión de Curtidores, Verano 1999 champion, were able to gain promotion to Primera Division for the 1999-2000 season after winning the playoff to Yucatán, Invierno 1998 champion. However, the Puebla F.C. acquired the franchise belonging. However, the Puebla F.C. acquired the franchise belonging to Union de Curtidores to remain in the First Division.
Changes for the 1998–99 season
- Tampico Madero was disaffiliated by the FMF.
- Gallos de Aguascalientes was promoted by winning the 1997–98 Second Division season.
- Veracruz was relegated from Primera División.
- Tecos Colima changed its name to Jaguares de Colima.
Stadiums and locations
| Club | Stadium | Capacity | City |
| Aguascalientes | Municipal de Aguascalientes | 12,500 | Aguascalientes, Aguascalientes |
| Atlético Mexiquense | Nemesio Díez | 35,000 | Toluca, State of Mexico |
| Bachilleres | Jalisco | 60,000 | Guadalajara, Jalisco |
| Chivas Tijuana | Cerro Colorado | 12,000 | Tijuana, Baja California |
| Cruz Azul Hidalgo | 10 de Diciembre | 17,000 | Cruz Azul, Hidalgo |
| Correcaminos UAT | Marte R. Gómez | 20,000 | Ciudad Victoria, Tamaulipas |
| Cuautitlán | Los Pinos | 8,000 | Cuautitlán, State of Mexico |
| Halcones de Querétaro | Corregidora | 35,000 | Querétaro, Querétaro |
| Irapuato | Sergio León Chávez | 26,000 | Irapuato, Guanajuato |
| Jaguares de Colima | Colima | 12,000 | Colima, Colima |
| La Piedad | Juan N. López | 15,000 | La Piedad, Michoacán |
| Real San Luis | Plan de San Luis | 18,000 | San Luis Potosí, S.L.P. |
| RS Zacatecas | Francisco Villa | 18,000 | Zacatecas, Zacatecas |
| Saltillo | Francisco I. Madero | 10,000 | Saltillo, Coahuila |
| San Francisco | San Francisco | 11,500 | San Francisco del Rincón, Guanajuato |
| Tigrillos | Estadio Universitario | 40,000 | San Nicolás de los Garza, Nuevo León |
| Unión de Curtidores | La Martinica | 12,000 | León, Guanajuato |
| Veracruz | Luis "Pirata" Fuente | 33,000 | Veracruz, Veracruz |
| Yucatán | Carlos Iturralde | 24,000 | Mérida, Yucatán |
| Zacatepec | Agustín Coruco Díaz | 18,000 | Zacatepec, Morelos |