刺楸（学名：Kalopanax septemlobus）是五加科刺楸属的植物，为该属的唯一种。

落叶乔木，有刺。掌状叶片5～7裂；夏季开白色或淡黄绿色小花，由伞形花序合成圆锥花序；蓝黑色球形核果。

Kalopanax septemlobus, common name prickly castor oil tree, is a deciduous tree in the family Araliaceae, the sole species in the genus Kalopanax. It is native to northeastern Asia, from Sakhalin and Japan west to southwestern China.