| Competition: | La Liga |
| Season: | –91 |
| Dates: | 1 September 1990 – 9 June 1991 |
| Winners: | Barcelona 11th title |
| Continentalcup1: | European Cup |
| Continentalcup1 Qualifiers: | Barcelona |
| Continentalcup3: | UEFA Cup |
| Continentalcup3 Qualifiers: | Real Madrid Osasuna Sporting de Gijón Oviedo |
| Continentalcup2: | Cup Winners' Cup |
| Continentalcup2 Qualifiers: | Atlético Madrid |
| Relegated: | Castellón Betis |
| Matches: | 380 |
| Total Goals: | 822 |
| League Topscorer: | Emilio Butragueño (19 goals) |
| Prevseason: | 1989–90 |
| Nextseason: | 1991–92 |
The 1990–91 La Liga season, the 60th since its establishment, started on September 1, 1990, and finished on June 9, 1991. Barcelona ended Real Madrid's five-year run as champions to seal the title.
