1983 Copa Libertadores
The Copa Libertadores 1983 was won by Grêmio against C.A. Peñarol.
Qualified teams
First round
One team from each group qualified to the semi-finals.- Two points were given for a win.
- One point was given for a tie.
- No points were given for a loss.
- Teams in green qualified to the semi-finals.
Group 1
Group 2
Group 3
Group 4
Group 5
Tiebreak Playoff MatchSemi-Finals
Group 1
Group 2
Finals
| Leg | Day | Venue | Home Team | Goals | Score | Goals | Away Team |
| First Leg | July 22, 1983 | Estadio Centenario, Montevideo |  Peñarol | Morena | 1-1 | Tita |  Grêmio |
| Second Leg | July 28, 1983 | Estádio Olímpico, Porto Alegre | Grêmio | Caio and César | 2-1 | Morena | Peñarol |
Champion
| Copa Libertadores 1983 Winner |
 Gremio First Title |