| Name | Group | Language of Origin | Languages of Use | Meaning/Translation or Related Words | US 2021 |
|---|
| Cade | Cade | Unknown | English | | #340 |
| Caden | Caden/Kayden | Old Irish | English | son of Cadán | #230 |
| Cael | Caol | Old Irish | English, Irish | slender, narrow | |
| Caelan | Caol | Old Irish | English | slender, narrow | |
| Caesar | Cäsar/Cesira | Latin | English | Words: cut, excise | |
| Caetano | Kajetan/Kajetana | Latin | Portuguese | from Caieta | |
| Cai | Cai | Mandarin | Kanji symbol, Mandarin | wealth, riches | |
| Caiden | Caden/Kayden | Old Irish | English | son of Cadán | #419 |
| Cailean | Cailean | Scottish | Scottish | | |
| Cain | Kain | Hebrew | English | maybe spear | #956 |
| Cainan | Kenan | Hebrew | English | | |
| Cainneach | Ken/Kenna | Celtic | Irish | the handsome | |
| Caio | Caio/Gaia | Latin | Italian | | |
| Caíque | Carlos Henrique | Portuguese | Portuguese | | |
| Cairo | Cairo | Arabic | English | Cairo | #323 |
| Cajetan | Kajetan/Kajetana | Latin | German, English | from Caieta | |
| Cal | Calvin | Old French | English | the little bald one | #876 |
| Cale | Caleb | Hebrew | English | dog | |
| Caleb | Caleb | Hebrew | English | dog | #51 |
| Calebe | Caleb | Hebrew | Portuguese | dog | |
| Calimero | Calimero | Old Greek | Italian | beautiful thigh | |
| Calisto | Callisto/Callista | Old Greek | Spanish | most beautiful | |
| Callahan | Callahan | Old Irish | English | son of Ceallachan | #659 |
| Callan | Callan | Old Irish | English, Scottish | son of Cathalan | #375 |
| Callen | Callan | Old Irish | English | son of Cathalan | #458 |
| Callisto | Callisto/Callista | Old Greek | Italian | most beautiful | |
| Callum | Callum | Latin | English, Scottish | dove | #273 |
| Calogero | Calogero/Calogera | Old Greek | Italian | beautiful elder | |
| Calum | Callum | Latin | English, Scottish | dove | #836 |
| Calvin | Calvin | Old French | German, English | the little bald one | #145 |
| Calvino | Calvin | Old French | Italian | the little bald one | |
| Camden | Camden | Old English | English | Words: valley | #175 |
| Camdyn | Camden | Old English | English | Words: valley | |
| Cameron | Cameron/Cameron | Old Irish | English, Scottish | crooked nose | #62 |
| Camill | Camillo/Camilla | Latin | French | maybe acolyte | |
| Camille | Camillo/Camilla | Latin | French | maybe acolyte | |
| Camillo | Camillo/Camilla | Latin | Italian | maybe acolyte | |
| Camilo | Camillo/Camilla | Latin | Spanish | maybe acolyte | #609 |
| Campbell | Campbell/Campbell | Scottish | Scottish | crooked mouth | |
| Camren | Cameron/Cameron | Old Irish | English | crooked nose | |
| Camron | Cameron/Cameron | Old Irish | English | crooked nose | |
| Camryn | Cameron/Cameron | Old Irish | English | crooked nose | |
| Can | Can | Turkish | Turkish | maybe life, soul | |
| Canaan | Canaan | Hebrew | English | | #950 |
| Candido | Candido/Candida | Latin | Italian | white | |
| Cannon | Canon | Old French | English | canon, priest | #503 |
| Canon | Canon | Old French | English | canon, priest | |
| Caoimhin | Kevin | Old Irish | Irish | the beautiful, the gentle | |
| Caol | Caol | Old Irish | English, Irish | slender, narrow | |
| Caolan | Caol | Old Irish | Irish | slender, narrow | |
| Carew | Carew | Welsh | English | Words: castle, fortress | |
| Carey | Carey | Old Irish | English, Irish | descendant of Ciardha | |
| Carl | Karl/Charlotte/Carla | Old High German | German, English | Words: man, husband | #927 |
| Carlito | Karl/Charlotte/Carla | Old High German | Portuguese, Spanish | Words: man, husband | |
| Carlo | Karl/Charlotte/Carla | Old High German | Italian | Words: man, husband | |
| Carlos | Karl/Charlotte/Carla | Old High German | Portuguese, Spanish | Words: man, husband | #152 |
| Carlos Daniel | Carlos Daniel | Spanish | Spanish | | |
| Carlos Eduardo | Carlos Eduardo | Spanish | Spanish | | |
| Carlos Henrique | Carlos Henrique | Portuguese | Portuguese | | |
| Carlton | Carlton | Old English | English | peasant settlement, settlement of freemen | |
| Carmelo | Carmine/Carmen | Hebrew | Italian | Words: fruit garden, fruitful land / song | #682 |
| Carmi | Carmi | Hebrew | English | Words: vineyard | |
| Carmine | Carmine/Carmen | Hebrew | Italian | Words: fruit garden, fruitful land / song | |
| Carsen | Carson/Carson | Old Norse | English | maybe son of Carr | |
| Carson | Carson/Carson | Old Norse | English, Irish, Scottish | maybe son of Carr | #98 |
| Carsten | Christian/Christine | Latin | German, Low German | Christian, disciple of Christ | |
| Carter | Carter | Old English | English | cart driver | #39 |
| Cartier | Carter | Old English | English | cart driver | |
| Cary | Carey | Old Irish | English | descendant of Ciardha | |
| Cas | Jasper | Old Persian | Dutch | treasurer | |
| Cäsar | Cäsar/Cesira | Latin | German | Words: cut, excise | |
| Case | Case | Unknown | English | | #632 |
| Casen | Kayson | Unknown | English | | #726 |
| Casey | Casey/Casey | Old Irish | English | descendant of Cathasaigh | #446 |
| Cash | Cash | Old French | English | Words: case | #253 |
| Casimir | Casimir | Polish | German, English | Words: destroy / great, famous / peace | |
| Casimiro | Casimir | Polish | Portuguese, Spanish, Italian | Words: destroy / great, famous / peace | |
| Cason | Kayson | Unknown | English | | #702 |
| Caspar | Jasper | Old Persian | German | treasurer | |
| Casper | Jasper | Old Persian | Dutch, Scandinavian | treasurer | |
| Caspian | Caspian | Unknown | Scandinavian | | #709 |
| Cassian | Cassiano | Latin | English | | #969 |
| Cassiano | Cassiano | Latin | Portuguese, Italian | | |
| Cassio | Cassius/Cassia | Latin | Italian | Words: empty, vain | |
| Cássio | Cassius/Cassia | Latin | Portuguese | Words: empty, vain | |
| Cassius | Cassius/Cassia | Latin | English | Words: empty, vain | #485 |
| Castiel | Castiel | Hebrew | English | maybe shield of God | #808 |
| Cataldo | Cathal | Old Irish | Italian | Words: battle / rule | |
| Catalin | Catalin | Old Greek | Romanian | | |
| Catello | Catello | Latin | Italian | puppy | |
| Cathal | Cathal | Old Irish | Irish | Words: battle / rule | |
| Cathalain | Cathalain | Old Irish | English | maybe brave warrior | |
| Cathán | Cathán | Old Irish | Irish | Words: battle | |
| Cauã | Cauã | Tupi | Portuguese | maybe eagle | |
| Cauê | Cauã | Tupi | Portuguese | maybe eagle | |
| Cay | Kai/Kaja | Old High German | German, Low German | | |
| Cayden | Caden/Kayden | Old Irish | English | son of Cadán | #289 |
| Cayo | Caio/Gaia | Latin | Spanish | | |
| Cayson | Cayson | Unknown | English | | #633 |
| Cecil | Cecil/Cecilia | Latin | English | Words: blind | |
