侧耳属（Pleurotus）是蕈褶菇类的其中一属。本属包含最广泛的食用菇类之一，平菇。

就像其他的担子菌门真菌，本属可经由沿着长菌丝出现的扣子体而辨认。

Pleurotus is a genus of gilled mushrooms which includes one of the most widely eaten mushrooms, P. ostreatus. Species of Pleurotus may be called oyster, abalone, or tree mushrooms, and are some of the most commonly cultivated edible mushrooms in the world. Pleurotus fungi have been used in mycoremediation of pollutants such as petroleum and polycyclic aromatic hydrocarbons.