Canarium fuscocalycinum is a tree of Borneo in the incense tree family Burseraceae. The specific epithet Latin: fuscocalycinum is from the Latin meaning "dark calyx".
Canarium fuscocalycinum grows as a tree up to 20m (70feet) tall with a trunk diameter of up to 25cm (10inches). Its twigs are rusty brown. The ellipsoid fruits measure up to 3.51NaN1.
Canarium fuscocalycinum is endemic to Borneo where it is confined to Sarawak. Its habitat is lowland mixed dipterocarp forests.