Reinwardtiodendron cinereum is a tree in the family Meliaceae, native to Southeast Asia. The specific epithet cinereum means 'ashen', referring to the leaves' colour on drying.
Reinwardtiodendron cinereum grows up to 27m (89feet) tall, with a trunk diameter of up to . It has a up to tall and to tall. The leaves are elliptic and measure up to long, occasionally to . The fruits are yellow.
Reinwardtiodendron cinereum is native to Peninsular Malaysia, Sumatra and Borneo. Its habitat is forests at elevations to .