Papilio constantinus, the Constantine's swallowtail, is a butterfly of the family Papilionidae.

Its flight period is during the warmer months peaking from November to February.

[4] The larvae feed on Vepris Reflexi, Vepris lanceolata, Vepris undulata, Clausena species, Citrus species, Teclea trifoliatum, Teclea nobilis, and Teclea gerrardii.

[2][4] Papilio constantinus is a member of the dardanus species group.

The members of the clade are: Listed alphabetically:[2] Afrotropical realm.