| Tourney Name: | Copa Libertadores de América |
| Year: | 1983 |
| Dates: | March 3 – July 28 |
| Num Teams: | 21 |
| Associations: | 10 |
| Champion Other: |  Grêmio |
| Count: | 1 |
| Second Other: | Peñarol |
| Matches: | 75 |
| Goals: | 184 |
| Prevseason: | 1982 |
| Nextseason: | 1984 |
The Copa Libertadores 1983 was the 24th edition of the Copa Libertadores, CONMEBOL's annual international club tournament. Grêmio won the competition against Peñarol.
| Country | Team | Qualify method |
|---|---|---|
| CONMEBOL (1 berth) | Peñarol | 1982 Copa Libertadores champion |
2 berths | Ferro Carril Oeste | 1982 Campeonato Nacional champions |
| Estudiantes | 1982 Campeonato Metropolitano champions | |
2 berths | 1982 Primera División champion | |
| Blooming | 1982 Primera División runner-up | |
2 berths | Flamengo | 1982 Campeonato Brasileiro Série A champion |
| Grêmio | 1982 Campeonato Brasileiro Série A 2nd place | |
2 berths | Cobreloa | 1982 Primera División champion |
| Colo-Colo | 1982 Liguilla Pre-Copa Libertadores winner | |
2 berths | América de Cali | 1982 Campeonato Profesional champion |
| Deportes Tolima | 1982 Campeonato Profesional runner-up | |
2 berths | El Nacional | 1982 Campeonato Ecuatoriano de Fútbol Serie A champion |
| Barcelona | 1982 Campeonato Ecuatoriano de Fútbol Serie A runner-up | |
2 berths | Olimpia | 1982 Primera División champion |
| Nacional | 1982 Primera División runner-up | |
2 berths | Universitario | 1982 Torneo Descentralizado champion |
| Alianza Lima | 1982 Torneo Descentralizado runner-up | |
2 berths | Nacional | 1982 Liguilla Pre-Libertadores winner |
| 1982 Liguilla Pre-Libertadores runner-up | ||
2 berths | San Cristóbal | 1982 Primera División champion |
| Deportivo Táchira | 1982 Primera División runner-up | |
The champions and runners-up of each football association were drawn into the same group along with another football association's participating teams. Three clubs from Uruguay competed as Peñarol was champion of the 1982 Copa Libertadores. They entered the tournament in the Semifinals.
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See main article: 1983 Copa Libertadores Finals.