Papilio rumanzovia, the scarlet Mormon or red Mormon, is a butterfly of the family Papilionidae. It is found in the Philippines but has been recorded as a vagrant to southern Taiwan. The species was named by Johann Friedrich von Eschscholtz after Nicholas Rumanzow, chancellor of the Russian Empire. It has traditionally been regarded as a species of its own rather than a subspecies of Papilio deiphobus, but the former treatment is still preferred by some. The larvae feed on Citrus species.