Caesarion
Cajus
Callum
Calvin
Cameron
Camillo
Can
Candid
Carl
Carlo
Carlos
Carsten
Caspar
Cassian
Cedric
Cedrick
Cedrik
Cem
Cenk
Cerrin
Cesare
Cevin
Chaim
Charles
Charley
Charlie
Charly
Chason
Chris
Christian
Christof
Christofer
Christoph
Christopher
Claas
Clas
Claudio
Claudius
Claus
Clemens
Colin
Collin
Connor
Conor
Conrad
Constantin
Corbin
Corbinian
Corin
Cornelius
Cornell
Corvin
Cosmo
Curt