Castanopsis evansii is a tree in the family Fagaceae. It is named for J. H. Evans, a governor of Puerto Princesa in the Philippines.
Castanopsis evansii grows as a tree up to 20m (70feet) tall with a trunk diameter of up to 30cm (10inches). The greyish bark is smooth, sometimes flaky. The coriaceous leaves measure up to 17cm (07inches) long. Its ovoid nuts measure up to 3.51NaN1 long.
Castanopsis evansii grows naturally in Borneo and the Philippines. Its habitat is dipterocarp forests up to 500m (1,600feet) elevation.