Palaquium ferrugineum is a tree in the family Sapotaceae. The specific epithet ferrugineum means 'rusty coloured', referring to the indumentum.
Palaquium ferrugineum features twigs that are reddish brown tomentose. The inflorescences bear up to six flowers.
Palaquium ferrugineum is endemic to Borneo, where it is known only from Sarawak. Its habitat is mixed dipterocarp forests.