Tetrapilus borneensis is a species of flowering plants in the olive family, Oleaceae. It grows as a tree up to 25m (82feet) tall, with a trunk diameter of up to 20cm (10inches). The bark is whitish or light grey. The flowers are white or yellowish-green. Fruit ripens to black. T. borneensis is found in Borneo and the Philippines. Its habitat is forests from sea level to 1650m (5,410feet) elevation.