Simaba borneensis grows as a tree up to tall with a trunk diameter of, with buttresses. The leaves are oblong or obovate to elliptic and measure up to long and up to wide. The are. The ellispoid fruits are purplish-red and measure up to in diameter.
Simaba borneensis is native to Sumatra and Borneo, where it is widely found. Its habitat is in lowlandprimarydipterocarp forests, occasionally in kerangas forests.