| Libertadores 1991 | |
|---|---|
| Tournament details | |
| Dates | February 20 – June 5 |
| Teams | 21 (from 10 associations) |
| Final positions | |
| Champions |  Colo-Colo (1st title) |
| Runners-up |  Olimpia |
| Tournament statistics | |
| Matches played | 90 |
| Goals scored | 221 (2.46 per match) |
| Top scorer(s) |  Gaúcho (8 goals) |
← 1990 1992 → | |
The 1991 Copa Libertadores was won by Colo-Colo of Chile after defeating Olimpia of Paraguay with a 3–0 aggregate score in the finals. The championship would mark a first for a Chilean club team in an international tournament. Twenty-one clubs from all South American countries within Confederación Sudamericana de Fútbol (CONMEBOL) participated.