Lithocarpus cantleyanus is a tree in the beech family Fagaceae. It is named for a superintendent of the Singapore Botanic Gardens, Nathaniel Cantley.
Lithocarpus cantleyanus grows as a tree up to tall with a trunk diameter of up to . The greyish brown bark is scaly or fissured or lenticellate. The coriaceous leaves measure up to long. Its brown acorns are ovoid and measure up to across.
Lithocarpus cantleyanus grows naturally in Myanmar, Thailand, Peninsular Malaysia, Singapore and Borneo. Its habitat is hill dipterocarp forests up to altitude.