Lithocarpus muluensis is a tree in the beech family Fagaceae.

It is named for Gunung Mulu mountain in Sarawak, Borneo.

[3] Lithocarpus muluensis grows as a tree up to 30 metres (100 ft) tall with a trunk diameter of up to 75 cm (30 in).

[3] Lithocarpus muluensis is endemic to Borneo, where it is confined to Gunung Mulu National Park in Sarawak.

Its habitat is mixed dipterocarp to montane forest, up to 1,500 m (5,000 ft) elevation.