Parnassius behrii, the Sierra Nevada parnassian, is a species of butterfly in the family Papilionidae. It is native to the Sierra Nevada of California, US, where it is found in habitats such as rock slides, alpine tundra, and stream edges. Adults use members of the Asteraceae family as nectar plants, and both adults and larvae use Sedum species as nectar and host plants. P. behrii has one flight from mid-July to early September.