Buchanania splendens is a tree in the family Anacardiaceae. The specific epithet ' is from the Latin meaning 'shining', referring to the leaves.
Buchanania splendens grows as a tree up to tall with a trunk diameter of up to . Its smooth bark is grey-brown. The flowers are white. The roundish fruits measure up to long.
Buchanania splendens grows naturally in the Andaman and Nicobar Islands, Sumatra and Borneo. Its habitat is lowland forests.