Constantinus
Constantinus fuit cognomen, nomen imperiale, nomen papale. Hodie est praenomen masculinum, usitatum in Graecia (Graece Κωνσταντίνος) Russiaque (Russice Константин, Konstantin).

Homines

Imperatores 
 Constantinus I, Imperator Romanus (306-337) 
 Flavius Tiberius Constantinus, Imperator Romanus Orientalis (578–582)
 Constantinus III, Imperator Romanus Orientalis (641)
 Constantinus IV, Imperator Romanus Orientalis (668–685)
 Constantinus V Copronymus, Imperator Romanus Orientalis (741–775)
 Constantinus VI, Imperator Romanus Orientalis (780–797)
 Constantinus VII Porphyrogenitus, Imperator Romanus Orientalis (913–959)
 Constantinus VIII, Imperator Romanus Orientalis (1025-1028)
 Constantinus IX Monomachus, Imperator Romanus Orientalis (1042-1055)
 Constantinus X Ducas, Imperator Romanus Orientalis (1059–1067)
 Constantinus XI Palaeologus, Imperator Romanus Orientalis (1448–1453)

Papae 
 Constantinus, papa

Reges Graecorum 
 Constantinus I
 Constantinus II

Ceteri 
 Constantinus Africanus, medicus, sexologus 
 Constantinus Brâncuși 
 Constantinus Cabaphes 
 Constantinus Canares 
 Constantinus Caratheodores 
 Constantinus Ciołkowski 
 Constantinus Flavickij 
 Constantinus Macroducas 
 Constantinus Palamas 
 Constantinus Paustovskij 
 Constantinus Simonov 
 Constantinus Stanislavskij 

Cognomina
Praenomina

fi:Konstantinus