Namesakes

Bishops of Rome and the Popes: 1 antipope, 1 pope
Constantine   708-715  
Constantine II   767-768  
Bulgarian Kings and Tsars: 3 tsars
Tsar Petar III (a.k.a. Constantine)   1072  
Tsar Konstantin I (a.k.a. Constantine)   1257-1277  
Tsar Konstantin II (a.k.a. Constantine)   1397-1422  
Greek Prime Ministers: 2 prime ministers
Constantine Kanaris   1844; 1848-1849; 1864; 1864-1865; 1877  
Konstantinos Karamanlis (a.k.a. Constantine)   1955-1958; 1958-1961; 1961-1963; 1974-1980  
Notable Filmmakers: 1 director/screenwriter
Alexander Payne (a.k.a. Constantine)   1961-  
Olympic Medalists: 1 bronze, 1 gold
(gold) Konstantinos II (a.k.a. Constantine)   1960   sailing - dragon  
(bronze) Constantine Louloudis   2012   rowing  
Other Royalty: 1 king
Konstantinos II (a.k.a. Constantine)   1964-1973   Greece  
Roman and Byzantine Emperors: 11 emperors
Emperor Flavius Valerius Aurelius Constantinus (a.k.a. Constantine)   306-337  
Emperor Flavius Claudius Constantinus (a.k.a. Constantine)   337-340  
Emperor Heraclius Novus Constantinus (a.k.a. Constantine)   641  
Emperor Constantinus (a.k.a. Constantine)   668-685  
Emperor Constantinus (a.k.a. Constantine)   741-775  
Emperor Constantinus (a.k.a. Constantine)   780-797  
Emperor Constantinus Porphyrogenitus (a.k.a. Constantine)   913-959  
Emperor Constantinus (a.k.a. Constantine)   1025-1028  
Emperor Constantinus Monomachus (a.k.a. Constantine)   1042-1055  
Emperor Constantinus Ducas (a.k.a. Constantine)   1059-1067  
Emperor Constantinus Palaeologus Dragases (a.k.a. Constantine)   1449-1453  
Russian Grand Dukes and Tsars: 1 duke
Duke Konstantin (a.k.a. Constantine)   1216-1218  
Saints: 2 saints
Saint Constantine the Great   c. 272-337  
Saint Constantine   ?-874  
Scottish Kings and Queens: 4 kings
King Causantín mac Fergus (a.k.a. Constantine)   789-820  
King Causantín I (a.k.a. Constantine)   862-877  
King Causantín II (a.k.a. Constantine)   900-943  
King Causantín III (a.k.a. Constantine)   995-997