Chionanthus polycephalus is a tree in the family Oleaceae. The specific epithet polycephalus means 'many-headed', referring to the inflorescence.
Chionanthus polycephalus grows as a tree up to 25m (82feet) tall, with a trunk diameter of up to 25cm (10inches). Its bark is dark grey. The flowers are creamy white. The fruit is yellowish, ovoid, up to 2.5cm (01inches) long.
Chionanthus polycephalus is endemic to Borneo, where it is confined to Sarawak. Its habitat is limestone and hill forest, at altitudes of NaNm (-2,147,483,648feet). This habitat is at risk from clearing for agriculture.