| Competition: | Campeonato Brasileiro Série A |
| Season: | 1974 |
| Winners: | Vasco da Gama 1st Campeonato Brasileiro title 1st Brazilian title |
| Continentalcup1: | Copa Libertadores de América |
| Continentalcup1 Qualifiers: | Vasco da Gama Cruzeiro |
| Matches: | 447 |
| Total Goals: | 945 |
| League Topscorer: | Roberto Dinamite (Vasco da Gama) - 16 goals |
| Biggest Home Win: | Flamengo 6-0 Paysandu (July 17, 1974) |
| Biggest Away Win: | Desportiva Ferroviária 0-5 Grêmio (May 25, 1974) CSA 0-5 Atlético Mineiro (March 20, 1974) |
| Average Attendance: | 11,599 |
| Prevseason: | 1973 |
| Nextseason: | 1975 |
The 1974 Campeonato Brasileiro Série A, officially the Quarto Campeonato Nacional de Clubes, was the 18th edition of the Campeonato Brasileiro Série A.
It was contested by 40 teams, and Vasco da Gama won the championship.