Quatsinoporites is an extinct monotypic genus of agaricomycet fungus in the Agaricomycetes family Hymenochaetaceae. At present it contains the single species Quatsinoporites cranhamii. The genus is solely known from the Barremian aged, Apple Bay deposits of northwestern Vancouver Island. Quatsinoporites is one of only three known fossil fungus species found on Vancouver Island and the only to be described from the Apple Bay strata. The agaricomycete Appianoporites vancouverensis was described from an Eocene fossil at the same time as Quatsinoporites , while a third fungus, Margaretbarromyces dictyosporus was described three years later.