Lithocarpus clementianus is a tree in the beech family Fagaceae. It is named for Governor Cecil Clementi Smith of the Straits Settlements (former British territories in Malaya).
Lithocarpus clementianus grows as a tree up to 36m (118feet) tall with a trunk diameter of up to 70cm (30inches). The brownish bark is fissured or cracked. The coriaceous leaves measure up to 19cm (07inches) long. Its purplish acorns are roundish and measure up to 1.51NaN1 across.
Lithocarpus clementianus grows naturally in southern Thailand, Peninsular Malaysia and Borneo. Its habitat is hill dipterocarp to lower montane forests up to 1800m (5,900feet) altitude.