Constantine III
Appearance
Constantine III may refer to:
- Constantine III (Western Roman Emperor), self-proclaimed western Roman Emperor 407–411
- Constantine III of Britain, legendary 6th century King of the Britons
- Constantine III (Byzantine emperor), Byzantine Emperor in 641
- Constantine III of Abkhazia, king of Abkhazia in 898/99–916/17
- Constantine III of Scotland, king of Scotland 995–997
- Patriarch Constantine III of Constantinople (ruled 1059–1063)
- Constantine III of Armenia (ruled 1298–1299)
- Constantine III of Cilicia, Catholicos of the Holy See of Cilicia in 1323–1326