Lithocarpus hatusimae is a tree in the beech family Fagaceae. It is named for the Japanese botanist Sumihiko Hatusima.
Lithocarpus hatusimae grows as a tree up to 20m (70feet) tall with a trunk diameter of up to 35cm (14inches). The greyish brown bark is smooth or fissured. Its coriaceous leaves measure up to 18cm (07inches) long. The dark brown acorns are ovoid to conical and measure up to 2.20NaN0 across.
Lithocarpus hatusimae is endemic to Borneo. Its habitat is mixed dipterocarp (including kerangas) to montane forests from 800m (2,600feet) to 2200m (7,200feet) elevation.