1998–99 Primera División A season
| Season | 1998–99 |
|---|---|
| Champions | Apertura: Yucatán (1st Title) Clausura: Unión de Curtidores (1st title) |
| Promoted | Unión de Curtidores |
| Relegated | San Francisco |
| Top goalscorer | Invierno: Cristián Ariel Morales (19) Verano: Ángel Lemus (16) |
← 1997–98 | |
Primera División A (Méxican First A Division) 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 to Union de Curtidores to remain in the First Division.