| Britain | - | English Name | Brooklyn | - | Dutch Name |
| Brooklynn | - | American Name | Butch | - | American Name |
| Butcher | - | English Name | Cache | - | American Name |
| Cade | - | American Name | Caden | - | American Name |
| Cal | - | American Name | Calico | - | Hebrew Name |
| Calvary | - | Biblical Name | Camari | - | Celtic Name |
| Cameron | - | Scottish Name | Canaan | - | Biblical Name |
| Candid | - | American Name | Canh | - | Vietnamese Name |
| Carmi | - | Biblical Name | Carshena | - | Biblical Name |
| Carson | - | English Name | Carver | - | English Name |
| Cary | - | Welsh Name | Casey | - | Irish Name |
| Cassidy | - | Irish Name | Ceallach | - | Gaelic Name |
| Chandler | - | English Name | Charlie | - | English Name |
| Chau | - | Vietnamese Name | Chen | - | Chinese Name |
| Chephirah | - | Biblical Name | Chicahua | - | Nahuatl Name |
| Chiko | - | Japanese Name | Chipahua | - | Nahuatl Name |
| Chris | - | Greek Name | Christian | - | Greek Name |
| Citlali | - | Nahuatl Name | Claude | - | Latin Name |
| Cody | - | English Name | Cong | - | Chinese Name |
| Connor | - | Irish Name | Copper | - | English Name |
| Corey | - | Irish Name |
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