Dyera costulata, the jelutong, is a species of tree in the family Apocynaceae.

It grows in Malaysia, Borneo, Sumatra and southern Thailand.

[3] Its natural distribution is scattered locales in low-elevation tropical evergreen forest.

Jelutong has been traditionally overharvested, and is a threatened species in many areas.

These properties such as the low density, straight grain and fine texture mean it is easy to work with and hence popular with model makers and within the patternmaking trade.