Équateur (French for "Equator") was one of the eleven provinces of the Democratic Republic of the Congo between 1966 and 2015, when it was split into the new, smaller Équateur province, as well as the Tshuapa, Mongala, Nord-Ubangi and Sud-Ubangi provinces.

Located in the north of the country, the province bordered the Republic of the Congo to the west, the Central African Republic to the north, to the east the Orientale province, and to the south the Kasai-Oriental, Kasai-Occidental and Bandundu provinces.