Humphreya is a genus of four species of polypore fungi in the family Ganodermataceae. The genus was circumscribed by Belgian mycologist René Léopold Steyaert in 1972. He proposed Humphreya as a genus segregate from Ganoderma, typified by Ganoderma lloydi Pat. & Har., and included Ganoderma coffeatum and the newly described Humphreya endertii. H. eminii was transferred to the genus (from Ganoderma) by Leif Ryvarden in 1980.