| Name | Meaning | Origins | Gender | Popularity (last 10y) | |
|---|---|---|---|---|---|
| Heydun | Probably a modern variant of Hayden/Haydn - a place-name associated with 'hay' or a 'hedged/valley' location; precise meaning uncertain | Irish | Unisex | — | |
| Heydyn | Variant of Hayden/Haydn - 'hay valley' or 'descendant of Éideán' (little fire) | English, Irish | Boy | — | |
| Hiberninah | From Hibernia - 'of Ireland' (also connoting winter in Latin) | Irish | Girl | — | |
| Hiolair | Eagle | Irish, Scottish Gaelic | Boy | — | |
| Holanah | Unknown/uncertain; possibly related to 'holly', 'happiness/beauty', or (if Hawaiian-influenced) a sense of movement/drifting | Gaelic, Irish | Girl | — | |
| Honoura | Honour, dignity | Irish | Girl | — | |
| Honourah | Honor; woman of honor | English, Irish | Girl | — | |
| hynes | Anglicized surname meaning 'descendant of Eidhin' (Eidhin is a Gaelic personal name possibly linked to Aidhne or derived from a word for 'ivy') | English, Irish | Unisex | — | |
| Iarfhlaith | Western ruler / lord of the west | Irish | Boy | — | |
| Iarfhlaithín | Little ruler of the west | Irish | Girl | — | |
| Iarla | Earl; nobleman | Irish | Boy | — | |
| Iarlaithín | Little earl | Irish | Boy | — | |
| Ibernia | From Iberia ('land of the Iberians') or influenced by Hibernia ('land of winter', poetic name for Ireland) | Irish, Spanish | Girl | — | |
| Ierne | Named for Ireland / the Irish goddess Ériu; broadly 'Ireland' or 'land of abundance' | Irish | Girl | — | |
| Ilean | Bright, shining; light | English, Irish | Girl | — | |
| Ileane | Often interpreted as 'bright, shining' or from Aveline meaning 'desired' | Irish | Girl | — | |
| Ileanie | Modern variant of Eileen/Ilene/Ileana - generally associated with 'light' or 'torch' (from Helen) or 'desired/wished-for' (from Irish Eibhlín). | English, Irish | Girl | — | |
| Ileany | Generally associated with 'light' or 'shining' (from Helen/Elena) or 'God has answered' (from Eliana); broadly 'bright' or 'responded to prayer' | Greek, Hebrew, Irish, Spanish | Girl | — | |
| Ileine | Bright, shining light; torch | Irish | Girl | — | |
| Ileinee | Bright, shining; light | English, Irish | Girl | — | |
| Ileyne | Bright, shining one; torch or light | Gaelic, Irish | Girl | — | |
| Inghean | Daughter | Irish, Irish (Gaelic) | Girl | — | |
| Inis | Island | Irish | Girl | — | |
| Iomar | Likely a Gaelic form related to Iomhar/Ivor, ultimately from Old Norse Ívarr meaning 'yew (tree) + warrior' - commonly interpreted as 'archer' or 'yew warrior'. | Irish, Scottish Gaelic | Boy | — | |
| Irial | Ancient Irish name borne by a legendary High King; exact meaning uncertain - often interpreted as 'watchful' or 'kingly/lordly'. | Irish | Boy | — | |
| Irva | Possibly “green water” or “sea/river friend” if derived from Irvine/Irving; otherwise meaning is uncertain | Irish | Girl | — | |
| Iverna | From Hibernia; 'of Ireland' (Irish) | Irish, Latin | Girl | — | |
| Jae-sean | Blend of 'Jae' (variant of Jay; in Korean contexts can imply 'talent' or vary by hanja) and 'Sean' (Irish for 'God is gracious') - overall suggesting 'talented/gracious' or 'God is gracious' | Irish | Boy | — | |
| Jarlath | Lordly, noble | Irish | Boy | — | |
| Juverna | Of Ireland / Irish | Irish, Latin | Girl | — | |
| Kaceey | Vigilant, watchful (also interpreted as brave) | Irish | Unisex | — | |
| kacie | Vigilant, watchful | English, Irish | Girl | — | |
| Kacye | Vigilant, watchful | Irish | Unisex | — | |
| kadyn | Little battle / descendant of Cadán; fighter | English, Irish | Unisex | — | |
| Kaesy | Vigilant; watchful | Irish | Unisex | — | |
| Kaffleen | Variant of Kathleen/Catherine; commonly understood to mean 'pure'. | English, Irish | Girl | — | |
| Kaflean | From Katherine/Kathleen: 'pure'; also associated with Gaelic Caoilfhionn: 'slender, fair' | Irish | Girl | — | |
| Kafleen | Likely "pure" (if derived from Kathleen/Catherine) | English, Irish | Girl | — | |
| Kahlie | A modern variant commonly tied to Kaylee - often interpreted as 'pure meadow' (Kay + Lee); meanings from related names include 'slender' or 'black' depending on root | English, Irish | Girl | — | |
| Kahyll | No single established historical meaning; possibly 'friend' (if from Khalil), or related to Irish/Gaelic roots meaning tied to Cathal/'battle' or Kael/'slender' depending on influence | English, Irish | Unisex | — | |
| Kaicy | Vigilant, watchful | Irish | Unisex | — | |
| kaidyn | Modern form of Caden/Kaiden: often interpreted as 'little battle', 'fighter' or 'son of Cadán' | English, Irish | Unisex | — | |
| Kailaney | A modern name probably derived from Hawaiian 'Kailani' meaning 'sea and sky'; overall a contemporary blend/name variant | Irish | Girl | — | |
| Kailtyn | Commonly interpreted as "pure" (from Catherine) | Irish | Girl | — | |
| Kaitlan | Pure | Irish | Girl | — | |
| Kaitleen | Pure | English, Irish | Girl | — | |
| Kaitline | Pure | Irish | Girl | — | |
| kaitlinn | Pure (derived from Katherine) | Irish | Girl | — | |
| Kaitrín | Pure | Irish | Girl | — | |
| Kalaghan | Descendant of Ceallachán; Ceallachán is often interpreted as 'bright-headed' or associated with 'strife'. | Irish | Boy | — |
Aggregated births across Ireland, United Kingdom, United States, Australia for every Irish-origin name in our dataset.
