Maurice Gustave Benoît Choisy was a French mycologist and lichenologist. He was a member of the Botanical Society of France, the Mycological Society of France, and the Linnean Society of Lyon. He was president of the botanical section of the latter society from 1949 to 1950.
Species named after Choisy include Dermatocarpon choisyi D.D.Awasthi; Haematomma choisyi Werner; and Lecidea choisyi Werner.