| Competition: | Campeonato Brasileiro Série A |
| Season: | 1978 |
| Winners: | Guarani 1st Campeonato Brasileiro title 1st Brazilian title |
| Continentalcup1: | Copa Libertadores de América |
| Continentalcup1 Qualifiers: | Guarani Palmeiras |
| Matches: | 792 |
| Total Goals: | 1771 |
| League Topscorer: | Paulinho (Vasco da Gama) - 19 goals |
| Biggest Home Win: | Guarani 7-0 Itabuna (April 30, 1978) |
| Biggest Away Win: | Sergipe 0-5 Vasco da Gama (May 11, 1978) Remo 0-5 Vasco da Gama (June 10, 1978) |
| Highest Scoring: | Botafogo-PB 6-3 Uberlândia (May 1, 1978) |
| Longest Wins: | Guarani (11 matches) |
| Longest Unbeaten: | Botafogo (24 matches) |
| Longest Losses: | Nacional-AM (8 matches) |
| Average Attendance: | 10,540 |
| Prevseason: | 1977 |
| Nextseason: | 1979 |
The 1978 Campeonato Brasileiro Série A, (officially the IV Copa Brasil) was the 22nd edition of the Campeonato Brasileiro Série A.
It was contested by 74 teams, and Guarani won the championship.
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