| Club: | Villarreal |
| Season: | 2003–04 |
| Chrtitle: | President |
| Chairman: | Fernando Roig |
| Mgrtitle: | Head coach |
| Manager: | Benito Floro (until 24 February) Paquito García |
| Stadium: | El Madrigal |
| League: | La Liga |
| League Result: | 8th |
| Cup1: | Copa del Rey |
| Cup1 Result: | Round of 16 |
| Cup2: | UEFA Cup |
| Cup2 Result: | Semi-finals |
| Cup3: | UEFA Intertoto Cup |
| Cup3 Result: | Winners |
| League Topscorer: | Sonny Anderson (12)[1] |
| Season Topscorer: | Sonny Anderson (19) |
| Pattern La1: | _villarreal0304h |
| Pattern B1: | _villarreal0304h |
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| Pattern Sh1: | _villarreal0304h |
| Pattern So1: | _villarreal0304h |
| Leftarm1: | FFFF00 |
| Body1: | FFFF00 |
| Rightarm1: | FFFF00 |
| Shorts1: | FFFF00 |
| Socks1: | 0000FF |
| Pattern La2: | _villarreal0304a |
| Pattern B2: | _villarreal0304a |
| Pattern Ra2: | _villarreal0304a |
| Pattern Sh2: | _villarreal0304a |
| Pattern So2: | _villarreal0304a |
| Leftarm2: | 000000 |
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| Prevseason: | 2002–03 |
| Nextseason: | 2004–05 |
The 2003–04 season was Villarreal Club de Fútbol's 81st season in existence and the club's 4th consecutive season in the top flight of Spanish football. In addition to the domestic league, Villarreal participated in this season's editions of the Copa del Rey and the UEFA Intertoto Cup. The season covered the period from 1 July 2003 to 30 June 2004.
See main article: 2003–04 La Liga.
See main article: 2003–04 Copa del Rey.
See main article: 2003–04 UEFA Cup.
See main article: 2003 UEFA Intertoto Cup.