Diospyros subtruncata is a tree in the family Ebenaceae. It grows up to tall. Inflorescences bear up to three flowers. The fruits are , up to long. The specific epithet ' is from the Latin meaning 'somewhat truncated', referring to the calyx. Habitat is lowland mixed dipterocarp forests from sea level to altitude. D. subtruncata is found in Sumatra and Borneo.