Dryobalanops oblongifolia is a species of plant in the Dipterocarpaceae family. The species name is derived from Latin (oblongus = rather long and folium = leaf) and refers to the shape of the leaf. There are two subspecies: Dryobalanops oblongifolia Dyer subsp. oblongifolia Dyer (synonyms = Baillonodendron malayanum F.Heim & Dryobalanops abnormis Slooten) is endemic to Borneo. It is found in at least one protected area (Kubah National Park), but is threatened elsewhere due to habitat loss. It is an emergent tree, up to 60 m tall, found in mixed dipterocarp forest on sandy clay soils.