Instituto O'Higgins is a private Catholic school located in the center of Rancagua, Chile.

It was founded in 1915 by four Marist Brothers, Andrés, Donato, Cristobal and Salvador María.

Originally the institute was exclusively for boys, but since year 2000, girls have been allowed as well.

[1] In 1925 the school created his own soccer team, the Club de Deportes Instituto O'Higgins, that was merged in 1954 with the Braden Copper Company team, creating the O'Higgins Braden club.

[2] This school has a sports park called Estadio Marista (Marist Stadium), located in the town of Machalí, near Rancagua.