
| Competition Logo | ||
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| Domestic Leagues | ||
| Domestic Cups | ||
| Pos. | Club | Pl. | W | D | L | Goals | Dif. | Pts |
| 1. | | 10 | 8 | 1 | 1 | 23:8 | 15 | 25 |
| 2. | | 10 | 7 | 0 | 3 | 19:9 | 10 | 21 |
| 3. | | 10 | 4 | 3 | 3 | 10:13 | -3 | 15 |
| 4. | | 10 | 4 | 2 | 4 | 15:18 | -3 | 14 |
| 5. | | 10 | 2 | 0 | 8 | 9:16 | -7 | 6 |
| 6. | | 10 | 1 | 2 | 7 | 5:17 | -12 | 5 |
| 27.02.1966 | Club Olimpia | 3:3 | Club Guaraní |
| 02.03.1966 | CF Universidad de Chile | 0:0 | CD Universidad Católica |
| 05.03.1966 | CD Universidad Católica | 2:0 | Club Guaraní |
| 05.03.1966 | CF Universidad de Chile | 1:2 | Club Olimpia |
| 08.03.1966 | CF Universidad de Chile | 2:0 | Club Guaraní |
| 08.03.1966 | CD Universidad Católica | 0:0 | Club Olimpia |
| 11.03.1966 | Club Guaraní | 1:1 | CF Universidad de Chile |
| 11.03.1966 | Club Olimpia | 0:4 | CD Universidad Católica |
| 16.03.1966 | Club Guaraní | 3:1 | CD Universidad Católica |
| 16.03.1966 | Club Olimpia | 2:0 | CF Universidad de Chile |
| 20.03.1966 | CD Universidad Católica | 2:2 | CF Universidad de Chile |
| 20.03.1966 | Club Guaraní | 2:0 | Club Olimpia |
| Pos. | Club | Pl. | W | D | L | Goals | Dif. | Pts |
| 1. | | 6 | 2 | 3 | 1 | 9:5 | 4 | 9 |
| 2. | | 6 | 2 | 2 | 2 | 9:9 | 0 | 8 |
| 3. | | 6 | 2 | 2 | 2 | 7:10 | -3 | 8 |
| 4. | | 6 | 1 | 3 | 2 | 6:7 | -1 | 6 |
| Pos. | Club | Pl. | W | D | L | Goals | Dif. | Pts |
| 1. | | 10 | 8 | 0 | 2 | 20:10 | 10 | 24 |
| 2. | | 10 | 7 | 1 | 2 | 22:10 | 12 | 22 |
| 3. | | 10 | 4 | 2 | 4 | 14:14 | 0 | 14 |
| 4. | | 10 | 4 | 1 | 5 | 21:22 | -1 | 13 |
| 5. | | 10 | 4 | 0 | 6 | 15:18 | -3 | 12 |
| 6. | | 10 | 1 | 0 | 9 | 13:31 | -18 | 3 |
| 23.03.1966 | Club Guaraní | 2:1 | Club Olimpia |
| 30.03.1966 | Club Guaraní | 1:3 | CA Boca Juniors |
| 06.04.1966 | Club Guaraní | 1:3 | CA River Plate |
| 08.04.1966 | CA Boca Juniors | 0:2 | CA Independiente |
| 12.04.1966 | CA Independiente | 1:1 | CA River Plate |
| 14.04.1966 | CA River Plate | 2:2 | CA Boca Juniors |
| 14.04.1966 | Club Guaraní | 0:2 | CA Independiente |
| 19.04.1966 | CA River Plate | 4:2 | CA Independiente |
| 19.04.1966 | CA Boca Juniors | 1:1 | Club Guaraní |
| 21.04.1966 | CA River Plate | 3:1 | Club Guaraní |
| 26.04.1966 | CA Independiente | 2:1 | Club Guaraní |
| 29.04.1966 | CA Independiente | 0:0 | CA Boca Juniors |
| 04.05.1966 | CA Boca Juniors | 1:0 | CA River Plate |
| Pos. | Club | Pl. | W | D | L | Goals | Dif. | Pts |
| 1. | | 6 | 3 | 2 | 1 | 13:8 | 5 | 11 |
| 2. | | 6 | 3 | 2 | 1 | 9:6 | 3 | 11 |
| 3. | | 6 | 2 | 3 | 1 | 7:6 | 1 | 9 |
| 4. | | 6 | 0 | 1 | 5 | 5:14 | -9 | 1 |
| 30.03.1966 | CD Universidad Católica | 1:0 | CA Peñarol |
| 02.04.1966 | CD Universidad Católica | 1:0 | Club Nacional de Football |
| 10.04.1966 | CA Peñarol | 3:0 | Club Nacional de Football |
| 14.04.1966 | Club Nacional de Football | 3:2 | CD Universidad Católica |
| 19.04.1966 | CA Peñarol | 2:0 | CD Universidad Católica |
| 23.04.1966 | Club Nacional de Football | 0:1 | CA Peñarol |
| Pos. | Club | Pl. | W | D | L | Goals | Dif. | Pts |
| 1. | | 4 | 3 | 0 | 1 | 6:1 | 5 | 9 |
| 2. | | 4 | 2 | 0 | 2 | 4:5 | -1 | 6 |
| 3. | | 4 | 1 | 0 | 3 | 3:7 | -4 | 3 |
| 12.05.1966 18.05.1966 20.05.1966 | CA Peñarol | 2:0 2:3 4:2 E | CA River Plate |