| Competition: | Campeonato Carioca |
| Season: | 1909 |
| Winners: | Fluminense |
| League Topscorer: | Flávio Ramos (Botafogo) – 18 goals |
| Biggest Home Win: | Botafogo 24-0 Mangueira (May 30, 1909) |
| Biggest Away Win: | Bangu 0-9 Fluminense (May 23, 1909) |
| Highest Scoring: | Botafogo 24-0 Mangueira (May 30, 1909) |
| Matches: | 33 |
| Total Goals: | 171 |
| Prevseason: | 1908 |
| Nextseason: | 1910 |
The 1909 Campeonato Carioca, the fourth edition of that championship, kicked off on May 2, 1909 and ended on October 31, 1909. It was organized by LMSA (Liga Metropolitana de Sports Athleticos, or Metropolitan Athletic Sports League). Seven teams participated. Fluminense won the title for the 4th time. No teams were relegated.[1] [2]
| Club | Home location | Previous season |
|---|---|---|
| Tijuca, Rio de Janeiro | ||
| Botafogo, Rio de Janeiro | ||
| Laranjeiras, Rio de Janeiro | ||
| Tijuca, Rio de Janeiro | ||
| Tijuca, Rio de Janeiro | ||
The tournament would be disputed in a double round-robin format, with the team with the most points winning the title.[2] [1]