Diospyros ferox is a tree in the family Ebenaceae. It grows up to tall. Inflorescences bear up to three flowers. The fruits are oblong- to round, up to in diameter. The specific epithet ' is from the Latin meaning 'fierce', referring to the rusty bristles on twigs, leaves, flowers and fruits. Habitat is swamps and mixed dipterocarp forests from sea-level to altitude. D. ferox is endemic to Borneo.