Parnassius tenedius, the tenedius Apollo, is an east Palearctic member of the snow Apollo genus (Parnassius) of the swallowtail family (Papilionidae). Populations range from Siberia and the Far East of Russia to the western Chukchi Peninsula, Mongolia and north China. The larva feeds on Corydalis species. In the northern part of its range it is a low altitude butterfly; further south it is montane.