| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Colin (2) | KAHL-in | English | ||
| Colleen | kah-LEEN | English | ||
| Collin | KAHL-in | English | ||
| Collyn | kah-LEEN | English (Rare) | ||
| Colten | KOL-tən | English (Modern) | ||
| Colton | KOL-tən | English (Modern) | ||
| Columbine | KAHL-əm-bien | English (Rare) | ||
| Comfort | KUM-fərt | English (Rare) | ||
| Connell | KAHN-əl | English (Rare) | ||
| Conner | KAHN-ər | English (Modern) | ||
| Connie | KAHN-ee | English | ||
| Connor | KAHN-ər (English) | Irish, English (Modern) | ||
| Conor | KAHN-ər (English) | Irish, English, Irish Mythology | ||
| Conrad | KAHN-rad (English), KAWN-raht (German) | English, German, Ancient Germanic | ||
| Constance | KAHN-stənts (English), kawn-STAWNS (French) | English, French |