| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Caitria | - | Irish | ||
| Calbhach | - | Irish | ||
| Calvagh | - | Irish | ||
| Caoileann | - | Irish | ||
| Caoilfhionn | KEE-lin | Irish | ||
| Caoilinn | - | Irish | ||
| CaoimhÍN | KEE-veen, KWEE-vin | Irish | ||
| Caoimhe | KEE-va, KWEE-va | Irish, Scottish | ||
| CaolÁN | - | Irish | ||
| Caomh | - | Ancient Irish | ||
| CaomhÁN | - | Ancient Irish | ||
| Carbrey | KAHR-bree | Irish, Scottish | ||
| Carbry | KAHR-bree | Irish, Scottish | ||
| Carey | KER-ee | Irish, English | ||
| Carrol | - | Irish |