Dipterocarpus caudatus is a species of plant in the evergreen or semi-evergreen Dipterocarpaceae family. The species is named derived from Latin (caudatus = tailed) and refers to narrow acumen of the leaf apex. It is an emergent tree, up to 50 m tall, in mixed dipterocarp forest on dry ridges. It is found within Sumatra, coastal Peninsular Malaysia, Singapore and Borneo. It is a medium hardwood sold under the trade names of Keruing. It was formerly most abundant along the coastal hills on sandy soils, but is endangered due to land conversion. D. caudatus is found in at least one protected area (Sepilok Forest Reserve).