The Campeonato Carioca Série B1 is the third tier of the professional state football league in the Brazilian state of Rio de Janeiro. It is run by the Rio de Janeiro State Football Federation (FERJ).

The Brazil Campeonato Carioca B, also known as the Carioca Second Division, is a professional football tournament held in the state of Rio de Janeiro. Serving as the second tier of the Rio de Janeiro state football league system, it provides a competitive platform for emerging clubs and teams seeking promotion to the top division, Campeonato Carioca A. The tournament features a diverse lineup of teams from across the region, competing throughout the season in a series of matches that showcase local talent and foster regional rivalries. With a rich history rooted in Rio de Janeiro's football culture, the Campeonato Carioca B is an essential stepping stone for clubs aiming to elevate their status and achieve greater success in Brazilian football.