| 1978 Mexican League season | |
|---|---|
| League | Mexican League |
| Sport | Baseball |
| Number of games | 1211 |
| Number of teams | 16 |
| Serie del Rey | |
| Champions | Rieleros de Aguascalientes |
| Runners-up | Algodoneros de Unión Laguna |
The 1978 Mexican League season was the 54th season in the history of the Mexican League. It was contested by sixteen teams, evenly divided in North and South zones. Rieleros de Aguascalientes won the championship by defeating Algodoneros de Unión Laguna in the Serie Final 4 games to 1, led by manager Jaime Favela in his first season as coach.[1][2] This was the Rieleros first, and as of 2024, only Mexican League championship.