The Fucha River is a river on the Bogotá savanna and a left tributary of the Bogotá River. The river originates in the Eastern Hills of the Colombian capital Bogotá and flows westward through the city into the Bogotá River. It is one of the three important rivers of the city, together with the Tunjuelo and Juan Amarillo Rivers.

Fucha is derived from Muysccubun, the indigenous language of the Muisca, who inhabited the Bogotá savanna before the Spanish conquest and means "her" or "female".

The Fucha River originates in the locality San Cristóbal in the Eastern Hills of Bogotá and is named in its upper course Quebrada Manzanares, San Cristóbal, Arzobispo and San Francisco River. It flows north from the Tunjuelo River westward and respectively forms the boundary between the localities Rafael Uribe Uribe (south) and Antonio Nariño (north) and Tunjuelito and Ciudad Bolivar (south) and Kennedy (north) of the Colombian capital and is canalised between the Carrera Séptima and the Avenida Boyacá. South of the locality Bosa, the Fucha River flows into the Bogotá River. The Fucha River is highly contaminated.

Four of the fifteen protected wetlands of Bogotá are located in the Fucha River basin.