Madhuca fusca is a tree in the family Sapotaceae. The specific epithet fusca means 'very dark brown', referring to the indumentum.
Madhuca fusca is endemic to Borneo. Its habitat is kerangas forests to 300m (1,000feet) altitude.
Madhuca fusca has been assessed as endangered on the IUCN Red List. The species is threatened by logging and conversion of land for palm oil plantations.