| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 181 | Carmichael | Gaelic | Follower of Michael; friend of Saint Michael. | M | |
| 182 | Carmichail | Gaelic | Son of the one who served Saint Michael. | M | |
| 183 | Carne | Gaelic | Variant of English surname Cairn meaning landmark or memorial of piled-up stones. | M | |
| 184 | Carney | Gaelic | Victorious. | M | |
| 185 | Carol | Gaelic | Champion. | M | |
| 186 | Carolan | Gaelic | Variant of Carlin: Small champion. | M | |
| 187 | Carollan | Gaelic | Variant of Carlin: Small champion. | M | |
| 188 | Carolus | Gaelic | Champion. | M | |
| 189 | Carraig | Gaelic | Rocky headland. | M | |
| 190 | Carrick | Gaelic | Rocky headland. | M | |
| 191 | Carroll | Gaelic | Champion. | M | |
| 192 | Casey | Gaelic | Brave. | F | |
| 193 | Casey | Gaelic | Brave. | M | |
| 194 | Casidhe | Gaelic | Dever. | F | |
| 195 | Casidhe | Gaelic | Clever. | M | |
| 196 | Cassidy | Gaelic | Dever. | F | |
| 197 | Cassidy | Gaelic | Clever. | M | |
| 198 | Cathaoirmore | Gaelic | Great warrior. | M | |
| 199 | Cathasach | Gaelic | Brave. | F | |
| 200 | Cathasach | Gaelic | Brave. | M | |