Psilocybin mushroom is one of a polyphyletic group of fungi that contain any of various psychedelic compounds, including psilocybin, psilocin, and baeocystin.

Common, colloquial terms for psilocybin mushrooms include psychedelic mushrooms, magic mushrooms, shrooms, and mush.

Biological genera containing psilocybin mushrooms include Copelandia, Gymnopilus, Inocybe, Mycena, Panaeolus, Pholiotina,.