Madhuca pubicalyx is a tree in the family Sapotaceae. The specific epithet pubicalyx means 'soft-haired calyx'.
Madhuca pubicalyx grows up to tall, with a trunk diameter of up to . The bark is greyish brown. Inflorescences bear up to eight flowers. The fruits are ellipsoid, up to long.
Madhuca pubicalyx is endemic to Borneo. Its habitat is mixed dipterocarp forest to altitude.
Madhuca pubicalyx has been assessed as near threatened on the IUCN Red List. The species is threatened by logging and conversion of land for palm oil plantations.