Diospyros ferox is a tree in the Ebenaceae family. It grows up to 20 metres (70 ft) tall. Inflorescences bear up to three flowers. The fruits are oblong-ovoid to round, up to 3 cm (1 in) in diameter. The specific epithet ferox 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 900 metres (3,000 ft) altitude. D. ferox is endemic to Borneo.