Dipterocarpus costulatus is a species of tree in the family Dipterocarpaceae. It grows up to tall.
Dipterocarpus costulatus is native to Peninsular Malaysia, Singapore, Borneo and Sumatra. Its habitat is in lowland kerangas forest or hill forest from sea level to 600m (2,000feet) altitude.
Dipterocarpus costulatus is threatened by logging and habitat loss, particularly in Borneo. The tree is logged for its hardwood. Forests where the species is present are being cleared for agricultural or plantation development. More frequent fires threaten lowland populations.