| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Cailean | KA-len | Scottish | ||
| Cairbre | KAHR-bra | Irish, Scottish | ||
| CairistÌOna | - | Scottish | ||
| CaitrÌOna | - | Scottish | ||
| Callum | KAL-um | Scottish | ||
| Calum | KAL-um | Scottish | ||
| Cameron | KAM-rən (English), KAM-ə-rən (English) | Scottish, English | ||
| Campbell | KAM-bəl | Scottish | ||
| Caoimhe | KEE-va, KWEE-va | Irish, Scottish | ||
| Carbrey | KAHR-bree | Irish, Scottish | ||
| Carbry | KAHR-bree | Irish, Scottish | ||
| Carson | KAHR-sən | Scottish, English | ||
| Catrina | - | Irish, Scottish | ||
| Catriona | ka-TREE-na, ka-TREE-o-na | Irish, Scottish | ||
| Christie (2) | - | Scottish, Irish |