Constantine is the name of several people:
- Constantine I of the Roman Empire
- Constantine II of the Roman Empire
- Constantine III of Rome
- Constantine III of Byzantium
- Constantine IV
- Constantine V
- Constantine VI
- Constantine VII
- Constantine VIII of the Byzantine Empire
- Constantine IX
- Constantine X
- Constantine XI
- Pope Constantine
- Constantine Lascaris
- Constantine I of Greece
- Constantine II of Greece
- Constantine I of Scotland
- Constantine II of Scotland
- Constantine III of Scotland
- Constantine Kanaris
- Constantine, Michigan
- Constantine Township, Michigan
- Constantine, Algeria