| Week | Date | Stadium | Home | Away | ||||
|---|---|---|---|---|---|---|---|---|
| week 1 | 19/06/1966 | Nacional Asunción |
2 2 |
Sol de America |
D |
|||
| week 2 | 25/06/1966 | Cerro Porteño |
1 0 |
Nacional Asunción |
L |
|||
| week 3 | 03/07/1966 | Rubio Ñu |
0 5 |
Nacional Asunción |
W |
|||
| week 4 | 10/07/1966 | Olimpia Asunción |
0 2 |
Nacional Asunción |
W |
|||
| week 5 | 17/07/1966 | Sportivo San Lorenzo |
0 1 |
Nacional Asunción |
W |
|||
| week 6 | 23/07/1966 | Nacional Asunción |
1 2 |
Guarani Asunción |
L |
|||
| week 8 | 07/08/1966 | Nacional Asunción |
1 3 |
Libertad |
L |
|||
| week 9 | 15/08/1966 | River Plate Asunción |
1 1 |
Nacional Asunción |
D |
|||
| week 10 | 28/08/1966 | Villa Elisa | Sol de America |
2 0 |
Nacional Asunción |
L |
||
| week 11 | 03/09/1966 | Nacional Asunción |
0 2 |
Cerro Porteño |
L |
|||
| week 12 | 11/09/1966 | Nacional Asunción |
4 1 |
Rubio Ñu |
W |
|||
| week 13 | 18/09/1966 | Nacional Asunción |
2 1 |
Olimpia Asunción |
W |
|||
| week 14 | 25/09/1966 | Nacional Asunción |
3 1 |
Sportivo San Lorenzo |
W |
|||
| week 15 | 15/10/1966 | Guarani Asunción |
3 2 |
Nacional Asunción |
L |
|||
| week 17 | 15/10/1966 | Estadio Nicolás Leoz | Libertad |
1 1 |
Nacional Asunción |
D |
||
| week 18 | 23/10/1966 | Nacional Asunción |
5 1 |
River Plate Asunción |
W |
