Tercera División B de Chile (Third Division B of Chile), is the fifth category of Chilean football (soccer) 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.
The Cuarta División de Chile was founded in 1983, being the continuation of Campeonato Regional Zona Central, and was disbanded in late 2003.
It returned in 2009 with its name changed to Tercera División B.
Currently, 18 teams participate on the 2014-15 season.
The winner and the runner-up of the league is promoted to Tercera División.