| Competition: | Primeira Liga |
| Season: | 1977-78 |
| Winners: | F.C. Porto 6th title |
| Relegated: | Portimonense Espinho Riopele Feirense |
| Continentalcup1: | European Cup |
| Continentalcup1 Qualifiers: | F.C. Porto |
| Continentalcup2: | Cup Winners' Cup |
| Continentalcup2 Qualifiers: | Sporting CP |
| Continentalcup3: | UEFA Cup |
| Continentalcup3 Qualifiers: | Benfica Braga |
| Matches: | 240 |
| Total Goals: | 585 |
| League Topscorer: | Fernando Gomes (25 goals) |
| Prevseason: | 1976–77 |
| Nextseason: | 1978–79 |
Statistics of Portuguese Liga in the 1977 - 78 season.
It was contested by 16 teams, and F.C. Porto won the championship. This year was notable for the fact that S.L. Benfica came second despite never losing a match throughout the entire season.
| Rank | Player | Club | Goals[1] |
|---|---|---|---|
| 1 | Fernando Gomes | Porto | 25 |
| 2 | Chico Gordo | Braga | 20 |
| 3 | António Oliveira | Porto | 19 |
| 4 | Rui Jordão | Sporting | 15 |
| Joaquim Rocha | Académica de Coimbra | ||
| 6 |  Mané | Vitória de Guimarães | 14 |
| Serginho | Feirense | ||
| Manuel Fernandes | Sporting | ||
| 9 | Manoel | Sporting | 13 |
| Albertino Pereira | Boavista |