The Campeonato Rondoniense is the football league of the state of Rondônia, Brazil. Between 1945 and 1990, the league was an amateur competition. The professional league started in 1991.

First Division

• First stage: double round-robin, in which all teams play each other home-and-away games.
• Second stage: home-and-away playoffs with the top 4 teams of the first stage.

The winner of the second stage is crowned the champion.

The team last placed in the first stage is relegated to the second division.

As in any other Brazilian soccer championship, the format can change every year.

2023 First Division

Note

• Pimentense (6th in 2022) withdrew from the tournament and was replaced by Guaporé.

Teams in bold stills active.

City	Championships	Clubs
Porto Velho	51	Ferroviário (17), Flamengo (10), Moto Clube (10), Ypiranga (5), Porto Velho EC (4), Botafogo (1), CFA (1), Genus (1), Rondoniense (1), São Domingos (1)
Ji-Paraná	12	Ji-Paraná (9), Ulbra (3)
Vilhena	7	Vilhena (5), São Paulo (1), Vilhenense (1)
Ariquemes	5	Real Ariquemes (3), SE Ariquemes (2)
Cacoal	2	União Cacoalense (2)
Espigão d'Oeste	1	Espigão (1)
Guajará-Mirim	1	Guajará (1)

• (in Portuguese) FFER Official Website
• (in Portuguese) List of Champions - FFER
• (in Portuguese) RSSSF