| Competition: | Primera División de México |
| Season: | 2003−04 |
| Winners: | UNAM (4th title) |
| Relegated: | San Luis |
| Continentalcup1: | Champions' Cup |
| Continentalcup1 Qualifiers: | UNAM |
| Continentalcup2: | Interliga |
| Continentalcup2 Qualifiers: | Toluca América Morelia Atlante Guadalajara UANL Santos Laguna Atlas |
| League Topscorer: | Bruno Marioni Andrés Silvera (16 goals) |
| Prevseason: | Apertura 2003 |
| Nextseason: | Apertura 2004 |
Primera División de México (Mexican First Division) Clausura 2004 is a Mexican football tournament - one of two short tournaments that take up the entire year to determine the champion(s) of Mexican football. It began on Saturday, January 17, 2004, and ran until May 15, when the regular season ended. On June 13, UNAM defeated Guadalajara in penalty kicks and became champions for the fourth time.
Players sorted first by goals scored, then by last name. Only regular season goals listed.
| Rank | Player | Club | Goals | |||
|---|---|---|---|---|---|---|
| align=center rowspan=2 | 1 |  Bruno Marioni | UNAM | align=center rowspan=2 | 16 | |
| Andrés Silvera | UANL | |||||
| align=center rowspan=2 | 3 | Salvador Cabañas | Chiapas | align=center rowspan=2 | 15 | |
 Robert de Pinho | Atlas | |||||
| align=center rowspan=1 | 5 | Marcelo Delgado | Cruz Azul | align=center rowspan=1 | 13 | |
| align=center rowspan=4 | 6 |  Cuauhtémoc Blanco | América | align=center rowspan=4 | 11 | |
| Jared Borgetti | Santos Laguna | |||||
| José Cardozo | Toluca | |||||
| Reinaldo Navia | América | |||||
| align=center rowspan=1 | 10 | Carlos Casartelli | Querétaro | align=center rowspan=1 | 10 |
Source: MedioTiempo
Cruz Azul won 4–1 on aggregate.
UNAM won 5–2 on aggregate.----
Cruz Azul won 4–3 on aggregate.----
3–3 on aggregate. Guadalajara advanced for being the higher seeded team.----
Toluca won 4–2 on aggregate.
UNAM won 3–2 on aggregate.----
Guadalajara won 2–1 on aggregate.
1–1 on aggregate. UNAM won 5–4 on penalty kicks.
| Pos. | Team | Pts. | Pld. | Ave. | |
|---|---|---|---|---|---|
| 13. | Irapuato | 48 | 38 | 1.2631 | |
| 16. | Monterrey | 136 | 112 | 1.2142 | |
| 17. | Querétaro | 127 | 112 | 1.1339 | |
| 18. | UAG | 118 | 112 | 1.0535 | |
| 19. | Puebla | 112 | 112 | 1.0000 | |
| 20. | San Luis | 73 | 76 | 0.9605 |