| Competition: | Campeonato Carioca |
| Season: | 1951 |
| Winners: | Fluminense |
| League Topscorer: | Carlyle (Fluminense) – 23 goals |
| Biggest Home Win: | Bonsucesso 5-0 Canto do Rio (December 9, 1951) |
| Biggest Away Win: | Canto do Rio 3-11 Bangu (December 30, 1951) |
| Highest Scoring: | Canto do Rio 3-11 Bangu (December 30, 1951) |
| Matches: | 112 |
| Total Goals: | 399 |
| Prevseason: | 1950 |
| Nextseason: | 1952 |
The 1951 edition of the Campeonato Carioca kicked off on August 4, 1951 and ended on January 20, 1952. It was organized by FMF (Federação Metropolitana de Futebol, or Metropolitan Football Federation). Eleven teams participated. Fluminense won the title for the 16th time. No teams were relegated.[1] [2]
The tournament would be disputed in a double round-robin format, with the team with the most points winning the title.