Papilio constantinus, the Constantine's swallowtail, is a butterfly of the family Papilionidae. It is found in Sub-Saharan Africa. The wingspan is 70–90 mm in males and 80–95 mm in females. Its flight period is during the warmer months peaking from November to February. The larvae feed on Vepris Reflexi, Vepris lanceolata, Vepris undulata, Clausena species, Citrus species, Teclea trifoliatum, Teclea nobilis, and Teclea gerrardii.

Taxonomy

Papilio constantinus is a member of the dardanus species group. The members of the clade are:

Subspecies

Listed alphabetically:

Biogeographic realm

Afrotropical realm.