Dipterocarpus costulatus is a species of tree in the family Dipterocarpaceae.

[1] Dipterocarpus costulatus is native to Peninsular Malaysia, Singapore, Borneo and Sumatra.

[1] Dipterocarpus costulatus is threatened by logging and habitat loss, particularly in Borneo.

Forests where the species is present are being cleared for agricultural or plantation development.

More frequent fires threaten lowland populations.