| Name | Meaning | Origins | Gender | Popularity (last 10y) | |
|---|---|---|---|---|---|
| Caysie | Vigilant, watchful | Irish | Girl | — | |
| Caysy | Watchful, vigilant | Irish | Unisex | — | |
| Caytlin | Pure | Irish | Girl | — | |
| Caytlyn | Pure (derived from Catherine) | Irish | Girl | — | |
| Ceallach | Uncertain; commonly given as "bright-headed" or linked to "strife/war" (some sources connect it with "church"). | Irish | Boy | — | |
| Ceallachan | Diminutive of Ceallach; meaning disputed - often given as 'little strife' or 'bright-headed'. | Irish, Irish (Gaelic) | Boy | — | |
| Ceannfhionn | Fair-headed (from ceann 'head' + fionn 'fair/white') | Irish | Girl | — | |
| Cearah | Dark-haired, black-haired | Irish | Girl | — | |
| Cearbhall | Fierce in battle; valiant | Irish | Boy | — | |
| Ceard | Craftsman, artisan; skill or trade | Irish | Boy | — | |
| Ceardach | Craftsman; artisan; skillful | Irish, Scottish Gaelic | Boy | — | |
| Cearra | Probably "dark-haired" (from Gaelic ciar); meaning is not firmly established for this spelling | Irish | Girl | — | |
| Ceiran | Little dark one (diminutive of the Irish 'ciar' meaning 'dark') | Irish | Boy | — | |
| Ceirra | Dark-haired, black | Irish | Girl | — | |
| Ceithin | Possibly 'little gentle/beloved one' (from Irish caomh + -ín) or 'dusky/dark-haired' (from Welsh ceth) | Irish | Boy | — | |
| Cele | Varies by origin: from Old Irish céle 'companion, servant'; or from Latin cael- 'heavenly' (via Celia/Celeste). | Gaelic, Irish, Latin, Zulu | Girl | — | |
| Chalin | Meaning uncertain; no widely attested definition - likely derived from a surname or a phonetic variant of names like Callan/Kalin | Irish | Unisex | — | |
| Challain | Probably 'little battle' or 'descendant of Cathalán' (from Irish 'Cathal' meaning 'battle') - meaning uncertain | Irish | Boy | — | |
| Chandonn | Likely a modern compound of Chandra (moon) + Donn (brown/chief) - roughly 'moon lord' or 'brown moon'. | French, Gaelic, Irish, Sanskrit | Boy | — | |
| Chathan | From Gaelic 'cath' meaning 'battle' - a diminutive sense 'little battle' or 'little warrior' | Irish | Boy | — | |
| Chavawn | God is gracious | Irish | Girl | — | |
| Chayn | Grace; favor (or 'God is gracious' when linked to Seán/Shane) | English, Hebrew, Irish | Unisex | — | |
| Chevawn | God is gracious | Irish | Girl | — | |
| Cian | Ancient, enduring | Irish | Boy | — | |
| ciana | Most often associated with 'dark-haired' (from the Irish root Cian); can also be linked to 'light' if derived from Luciana or treated as a variant of Kiana/Diana. | English, Hawaiian, Irish, Italian, Polynesian | Girl | — | |
| Cianait | Diminutive of Cian - "little Cian" (Cian = ancient, enduring) | Irish | Girl | — | |
| Ciannait | Diminutive of Cian - 'little Cian' (related to 'ancient' or 'enduring') | Irish | Girl | — | |
| Ciar | Dark, black, dark-haired | Irish | Boy | — | |
| Ciarah | Dark-haired / black | Irish | Girl | — | |
| Ciarda | Likely 'dark' or 'dark-haired' (a feminine form/variant tied to Gaelic ciar) | Irish | Girl | — | |
| Ciardha | From Irish ciar meaning "dark" or "black" (dark-haired or dark-complexioned) | Irish | Boy | — | |
| Ciardubhan | Little dark one | Irish | Boy | — | |
| Ciaren | Little dark one; 'dark-haired' (from Gaelic 'ciar' meaning dark + diminutive -án) | Irish | Boy | — | |
| Ciaron | Little dark one (diminutive of 'ciar' meaning dark) | Irish | Boy | — | |
| Ciarrah | Dark-haired, black | Irish | Girl | — | |
| Ciarrai | From Irish ciar meaning "dark" or "black"; can also evoke Ciarraí (County Kerry) in Irish. | Irish | Girl | — | |
| ciera | From Irish Ciara 'dark-haired' or Spanish sierra 'mountain range' | Irish, Spanish | Girl | — | |
| Cieren | From Gaelic 'ciar' meaning 'dark' - 'little dark one'. | Irish | Boy | — | |
| Cillan | Likely Irish in origin; commonly interpreted as "little church" (from ceall + -ín) or linked to Ceallach meaning "strife/war". | Irish | Boy | — | |
| Cillian | Likely from Old Irish Ceallach meaning 'war/strife' or 'bright-headed'; sometimes linked to cill ('church') as 'little church' in later interpretations. | Irish | Boy | — | |
| Cinead | Born of fire | Irish, Scottish Gaelic | Boy | — | |
| Cinneidid | Uncertain; likely related to Gaelic elements meaning 'head/chief' or 'helmet-headed' (connected to the Kennedy root) | Gaelic, Irish | Unisex | — | |
| Cinneididh | From Gaelic Ó Cinnéidigh, generally interpreted as 'helmet-headed' (from elements meaning 'head' + 'helmet/armour'). | Irish, Scottish Gaelic | Unisex | — | |
| Cinneidigh | Helmet-headed | Irish | Boy | — | |
| Ciona | Possibly 'ancient' or 'enduring' (from Irish Cian) or 'snow' (from Greek Chione); also used as a modern variant of Kiana/Kiona. | Greek, Irish | Girl | — | |
| Cionaodh | Likely 'affection of Aodh' - i.e., 'beloved of Aodh' (Aodh = Gaelic name often glossed as 'fire' or a fire-god). | Irish | Boy | — | |
| Clancey | Descendant of Flannchadh; red-haired, ruddy | Irish | Unisex | — | |
| Clancie | Descendant/son of Flannchadh ('red' or 'red‑haired warrior') | Irish | Unisex | — | |
| Clansi | Probably from Irish 'Clancy', ultimately from flann meaning 'red' - 'red-haired' or 'descendant of Flann' | Irish | Unisex | — | |
| Clansy | Descendant of Flannchaidh; related to 'flann' meaning red or ruddy (red-haired/red warrior) | Irish | Unisex | — |
Aggregated births across Ireland, United Kingdom, United States, Australia for every Irish-origin name in our dataset.
