Tercera B
Tercera División B de Chile, is the fifth tier of Chilean football in the Liga Chilena de Fútbol, and is organized by the Federación de Fútbol de Chile and the Asociación Nacional de Fútbol Amateur de Chile. It is both the fifth level of the Chilean football league system and the second league for Chilean Football Youth Leagues.
History
The Cuarta División de Chile was founded in 1983, as the successor to the Campeonato Regional Zona Central,The division was disbanded in late 2003 before returning in 2009 with its name changed to Tercera División B.
Thirty-six teams participated in the 2024 season. The winner and the runner-up of the league are promoted to Tercera División.