| Competition: | Campeonato Brasileiro Série A |
| Season: | 1977 |
| Winners: | São Paulo 1st Campeonato Brasileiro title 1st Brazilian title |
| Continentalcup1: | Copa Libertadores de América |
| Continentalcup1 Qualifiers: | São Paulo Atlético Mineiro |
| Matches: | 485 |
| Total Goals: | 1204 |
| League Topscorer: | Reinaldo (Atlético Mineiro) - 28 goals |
| Biggest Home Win: | Bahia 7-0 Vitória-ES (November 2, 1977) |
| Biggest Away Win: | Fluminense de Feira 0-6 Flamengo (October 26, 1977) |
| Highest Scoring: | CRB 6-4 Sport (November 20, 1977) |
| Longest Wins: | Atlético Mineiro (8 matches) |
| Longest Unbeaten: | Atlético Mineiro (21 matches) |
| Longest Losses: | Sergipe (7 matches) |
| Average Attendance: | 16,404 |
| Prevseason: | 1976 |
| Nextseason: | 1978 |
The 1977 Campeonato Brasileiro Série A, (officially the III Copa Brasil) was the 21st edition of the Campeonato Brasileiro Série A.
It was performed by 62 teams, and São Paulo won the championship. This championship is notable for producing a rare instance of an unbeaten runner-up. Atlético Mineiro had won all but three of its matches, which were drawn, but was to play a single final match against São Paulo, without any advantage. A controversial scoreless draw, marred by violent play mostly (but not exclusively) on the part of São Paulo, had to be solved in a penalty shootout.
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