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The Campeonato Carioca Série B2 is the football fourth level of the First Division annual competition among clubs in the state of Rio de Janeiro, Brazil.

The current version from 2021 of Campeonato Carioca Série B2 is the fourth-highest level. The previous version of the tournament was implemented in 2017 as the third-highest level, replacing the old Série C, which became the state's fourth division.^[1][2]

Following is the list with all the champions of the fourth level of Rio de Janeiro and their different nomenclatures over the years.^[3]

Teams in bold stills active.

City	Championships	Clubs
Rio de Janeiro	5	Anchieta (1), Barra da Tijuca (1), Campo Grande (1), Ceres (1), São Cristóvão (1)
Angra dos Reis	1	Vera Cruz (1)
Cardoso Moreira	1	Cardoso Moreira (1)
Casimiro de Abreu	1	Casimiro de Abreu (1)
Magé	1	Mageense (1)
Niterói	1	Tio Sam (1)
Resende	1	Pérolas Negras (1)
Santo Antônio de Pádua	1	Paduano (1)
São Gonçalo	1	Cosmos (1)

• Campeonato Carioca Série A1
• Campeonato Carioca Série A2
• Campeonato Carioca Série B1
• Campeonato Carioca Série C

• (in Portuguese) FFERJ website
• Third Level champions at RSSSF
• Best Attendances in Campeonato Carioca at RSSSF