| Name | Meaning | Origins | Gender | Popularity (last 10y) | |
|---|---|---|---|---|---|
| Carsan | Derived from Carson; possibly 'son of Carr' or originally a habitational/marsh-related surname - exact meaning is uncertain | English, Irish | Boy | — | |
| Cartagh | Loving, affectionate; 'beloved' | Irish | Boy | — | |
| Carthach | Loving, beloved (from Old Irish root 'car' meaning love) | Irish | Boy | — | |
| Cary-Anne | A compound name blending Cary (variously 'dark', 'from the place', or 'beloved') with Anne ('grace') - roughly 'graceful beloved' or 'dark grace'. | English, Irish | Girl | — | |
| Casee | Vigilant, watchful (also sometimes rendered as 'brave in battle') | Irish | Unisex | — | |
| cassaday | Derived from the surname Ó Caiside - 'descendant of Caiside'; Caiside is often interpreted as 'curly-haired' or 'clever.' | Irish | Unisex | — | |
| Cassadey | Descendant of Caiside; often interpreted as 'curly-haired' or 'clever'. | Irish | Girl | — | |
| Cassadi | “Descendant of Caiside”; from Gaelic element cas meaning “curly‑haired” (sometimes rendered as “clever”). | Irish | Girl | — | |
| Cassidey | Descendant of Caiside; often interpreted as 'curly-haired' or 'clever'. | Irish | Unisex | — | |
| cassidi | Descendant of Caiside; often interpreted as 'curly-haired' | Irish | Unisex | — | |
| Cassidia | From the Irish Ó Caiside - commonly interpreted as 'curly-haired' or 'clever'; sometimes associated with Cassia ('cinnamon') | Irish | Girl | — | |
| cassity | Descendant of Caiside; derived from Gaelic 'cas' meaning 'curly', often interpreted as 'curly-haired' (sometimes rendered as 'clever'). | Irish | Unisex | — | |
| Cassydie | Descendant of Caiside; often interpreted as 'curly-haired' or associated with a family/clan name | Irish | Girl | — | |
| Cassydy | Descendant of Caiside; often interpreted as 'clever' or 'curly‑haired' | Irish | Unisex | — | |
| Casy | Vigilant; watchful | Irish | Unisex | — | |
| Catalynn | Pure | English, Irish | Girl | — | |
| Catha | Either 'pure' (from Catherine) or 'battle' (from Gaelic 'cath') | English, Irish, Scottish | Girl | — | |
| Cathair | Stone fort; seat - later 'city' (from Old Irish) | Irish | Boy | — | |
| Cathairín | Irish form of Catherine; ultimately from Greek Aikaterine, commonly interpreted to mean 'pure'. | Irish | Girl | — | |
| Cathal | Battle ruler; mighty in battle | Irish | Boy | — | |
| Cathall | Battle-mighty / powerful in battle | Irish | Boy | — | |
| Cathalla | Derived from Cathal: 'battle ruler' / 'mighty in battle' | Irish | Girl | — | |
| Cathaoir | Likely from Old Irish cath 'battle' - broadly 'battle lord' or 'warrior'. | Irish | Boy | — | |
| Cathasach | Vigilant, watchful | Irish | Boy | — | |
| Cathba | Likely derived from Old Irish cath 'battle' - possibly 'battle-born' or 'battle leader' | Gaelic, Irish | Boy | — | |
| Cathel | Battle ruler (battle-mighty) | Irish | Boy | — | |
| Cathleanah | Pure | English, Irish | Girl | — | |
| Cathleane | Pure | English, Irish | Girl | — | |
| Cathleena | Pure | English, Irish | Girl | — | |
| Cathleene | Pure | English, Irish | Girl | — | |
| Cathlein | Pure | Irish | Girl | — | |
| Cathleina | Pure | English, Irish | Girl | — | |
| Cathleinah | Pure | English, Irish | Girl | — | |
| Cathlen | Derived from Katherine - "pure" or "clear" | Irish | Girl | — | |
| Cathlenah | Pure (derived from Catherine via Kathleen/Caitlín) | English, Irish | Girl | — | |
| Cathlene | Pure | English, Irish | Girl | — | |
| Cathlin | Pure | English, Irish | Girl | — | |
| Cathlinah | Pure | Irish | Girl | — | |
| Cathline | Pure | English, Irish | Girl | — | |
| Cathmor | From Irish elements cath 'battle' + mór 'great' - 'great battle'. | Irish | Boy | — | |
| Cathmore | Great warrior | Irish, Scottish Gaelic | Boy | — | |
| Cathol | Battle ruler / powerful in battle | Irish | Boy | — | |
| Catlin | Derived from Catherine, meaning "pure" | Irish | Girl | — | |
| Catreenah | Likely a variant of Catherine, derived from Greek meaning "pure". | Greek, Irish | Girl | — | |
| Catrionah | Pure | Irish, Scottish Gaelic | Girl | — | |
| Caulan | Slender, narrow (from Gaelic 'caol') | Irish | Boy | — | |
| Cauley | Originally a surname meaning 'son/descendant of Amhlaoibh' - Amhlaoibh is the Gaelic form of Olaf (so 'descendant of Olaf') | Irish, Scottish Gaelic | Unisex | — | |
| Cawley | From the Gaelic personal name Cadhla meaning "beautiful, graceful, comely"; used as a surname-derived given name. | Irish | Unisex | — | |
| Cayen | Likely 'little battle' (from Caden/Cadán) or alternatively evokes 'fiery/pepper' if derived from Cayenne | English, Irish | Unisex | — | |
| Cayleenah | Modern feminine name, likely derived from Irish Cailín ('girl') or from Kathleen/Catherine ('pure') | Irish | Girl | — |
Aggregated births across Ireland, United Kingdom, United States, Australia for every Irish-origin name in our dataset.
