Papilio hospiton, the Corsican swallowtail, is a species of butterfly in the family Papilionidae.

The black colour is more extended and more densely powdered with yellow than in P. machaon.

The Corsican swallowtail inhabits mountainous regions at 400–1,500 metres (1,300–4,900 ft) above sea level on the islands of Corsica and Sardinia.

[1] The food plants are from the family Umbelliferae, and include fennel, giant fennel (Ferula communis), Corsican rue (Ruta corsica) and Peucedanum paniculatum though some of these records are disputed.

Habitat destruction and disappearance of food plants as well as excessive collecting are the principal threats to the Corsican swallowtail.