Caden  

Cain

Cal

Caleb

Calvin

Cameron

Carl

Carmon

Cavin

Cephas

Chad

Charles

Charlie, Charley

Chase

Chester

Chet

Chevy

Chip

Chris

Christian

Christopher

Clare, Clarence

Clark

Claude, Claudius

Clay

Clayton

Clement

Cliff, Clifford

Clinton

Clive

Clyde

Cody

Cole

Conner

Conrad

Corey

Cornelius

Craig

Curt, Curtis