| ABAIGEAL f Irish |
| ACHTAN f Irish Mythology, Celtic Mythology |
| AIBREAN f Irish |
| AIEDYNN m & f Irish |
| AILEENA f Irish |
| AILEY f Irish |
| AILI f Finnish, German, Irish |
| AILIONÓRA f Irish |
| AILISH f Irish |
| AILISH f Irish, Celtic Mythology |
| AILISH f Irish |
| AILYNN f Irish |
| AIMEND f Irish |
| AINMIRE m Irish |
| AIREE f Scottish, Irish |
| AISLEYNE f Irish |
| AISLYN f & m Irish |
| ALABHAOIS m Irish |
| ALANUS f & m Irish |
| ALAYNA f Irish, Breton, English |
| ALGENOUS f Irish |
| ALLIENA f English, French, German, Irish |
| ALLYN f Irish |
| ALOISHE f Irish, Celtic Mythology |
| ALSANDAIR m Irish |
| AMEILIA f Irish Mythology |
| AMER m Arabic, Irish |
| AMERGIN m Irish |
| ANALISA f Italian, Irish, Finnish |
| ANITRA f Hebrew, Greek, Italian, Irish |
| ANLON m Irish |
| ANNE-ELAINE f Irish |
| ANNERH m & f Irish |
| ANNIE-LAURIE f Irish |
| ANNORI f Irish |
| ANOLDA f Irish |
| AOIBHGREINE f Irish Mythology |
| AOINE f Irish (Modern) |
| APPALOMA f Native American, Irish |
| ARLENA f Irish Gaelic |
| ARLYN f Irish, Gaelic |
| ARM m Irish |
| ARVA f Irish, Danish, Hungarian |
| ASÁILIA f Irish |
| ASHLAND f Irish |
| ASLYNN m & f Irish |
| ATHAIRNE m Scottish, Irish, Irish Mythology |
| AUDGEN m Irish |
| AURNIA f Irish |
| AVEN f Irish, English |
| AVONELLE f English, Irish |
| AYLISH f Irish |
| AYMEE f Irish |
| BADB f Irish Mythology, Irish |
| BÁINE f Irish, Irish Mythology |
| BÁINLEANNÁN f Irish Mythology, Irish |
| BALOR m Irish Mythology |
| BARTLEBY m Biblical, Irish, Irish Mythology |
| BAYVIN f Irish, English |
| BEAGÁN f Irish |
| BEC f Irish, Ancient Celtic |
| BECKETT m Irish, English |
| BELLAGHY f Irish |
| BENNARY f Irish |
| BEONA f & m Irish, Anglo-Saxon |
| BERCHAN m Irish, Filipino |
| BLANE m Irish |
| BOBBIEJO f Irish Mythology |
| BODB m & f Irish Mythology, Irish |
| BONNER m French, Irish, ? |
| BRADHADAIR f Irish |
| BRAYLON m Irish |
| BREAGAN m ?, English, Scottish, Irish, Welsh |
| BRECK m & f Irish, Scottish |
| BRECK m & f Irish, Scottish |
| BRECKEN f Irish |
| BREEANNA f Irish |
| BREENA f Irish |
| BRENDA f & m Irish |
| BRIANEENE f Irish |
| BRIDEY f Irish |
| BRIDEY f Irish |
| BRIEANAH f Irish |
| BRIEGE f Irish |
| BRIEN m Irish |
| BRIGHT f & m ?, Irish |
| BRIONA f Irish |
| BRIONNA f English, Irish |
| BRITTINEY f Czech, German, Irish, Scottish |
| BRITTLEE f Irish |
| BRONA f Irish |
| BRÓNA f Irish |
| BRYDON m Irish, Scottish, English |
| BRYNA f Irish, Canadian |
| BUADHACH m Irish |
| BURGIN m & f Irish |
| BUTLER m Irish, ? |
| CADHLA f & m Irish |
| CAELYN f Irish |
| CAIRA f Scottish, English, Irish, Italian |
| CAIRENN f Irish, Celtic Mythology |
| CAISEAL m Ancient Celtic, Irish |
| CAITIE f Irish, English, Scottish |
| CAITÍN f Irish |
| CAITLYN f Irish, English |
| CAITLYND f Irish |
| CAITLYNN f English, Irish, Galician |
| CAITRIN f Irish |
| CALEY f Irish |
| CALI f Irish, Celtic |
| CALLAN f & m Galician, Irish |
| CALLAN m Irish |
| CANE m English, Irish |
| CAOILTE m Irish, Galician, Celtic Mythology |
| CAPRI f Italian, English, Irish |
| CARADONNA f Italian, Ancient Roman, Ancient Celtic, Irish, English |
| CARÁL f Irish |
| CARBRIE m Irish |
| CARRIGAN f Irish |
| CASIE f Irish, , English |
| CATHAIRMAC m English, Irish |
| CATIE f English, Irish |
| CATLIN f English, Irish |
| CATTIE-BRIE f Irish |
| CAVANAUGH m & f Irish, English |
| CAYLA f English, Irish |
| CEALLAN m Scottish, Irish |
| CÉARA f Irish |
| CEILI f Irish |
| CEILIDH f Irish, Scottish |
| CELTRIS f Irish, ? |
| CETHLENN f Irish, Celtic Mythology |
| CHASEY m Irish, English |
| CHASTAINE f Irish, German, Scottish |
| CHENAE f English, German, Germanic Mythology, Irish Mythology |
| CHRISTYNA f Irish |
| CIAN m Ancient Celtic, Irish, Celtic Mythology |
| CIARMAC m Irish |
| CIONNFHAOLADH m & f Irish |
| CLIODNA f Celtic Mythology, Irish Mythology |
| COAT m ?, Irish |
| COCKRELL m Italian, Irish |
| CODI f Irish, English, Hebrew |
| CÓILÍN m Irish |
| COLEEN f Irish, Scottish, Ancient Celtic, English |
| COLLA m Scottish, Irish, Irish Mythology |
| COLLEARY f Irish, Ancient Celtic |
| COLLIE f Irish |
| CONANT m German, Irish |
| CONCHUR m Galician, Irish |
| CONNERS m Irish |
| CONRIY m Irish |
| CORDIE f English, Irish, ? |
| CORRAN m Irish |
| CORRAN m Irish |
| CORREN m Irish |
| CORRIGAN m Irish |
| COSTELLO m Irish |
| COWAN m Irish |
| CREIG m Scotch-Irish, Irish |
| CRÍONNA f Irish (Modern) |
| CROÍADH f Irish |
| CUEN m Irish Mythology |
| CULLY f & m Irish |
| CUMMINGS f American, English, Irish, Scottish |
| CURRAN m Irish |
| DACEY f & m Irish, English |
| DALLAN m Irish |
| DALLIN m English, Irish, Norse |
| DANELEA f Irish |
| DANNON f & m Irish, Scottish |
| DARBE f & m Irish, ? |
| DARCI f & m Irish |
| DARCI f English, Irish |
| DARCIEY-ROSE f Irish |
| DARERCA f Irish |
| DARRYLL m Irish |
| DASIE f English, Irish |
| DÉAGLÁN m Irish |
| DEVANIE f Irish |
| DEVANY f Irish |
| DEVION f & m American, British, Irish Mythology, ? |
| DEVLIN m Irish |
| DEVLYN m Irish |
| DEVONY f Irish |
| DILLON m Irish, Great Britain, German, Scottish |
| DILYN f English, Irish |
| D.J. m & f English, Irish, Scottish |
| DONEGAL m & f Irish |
| DONIA f Irish |
| DONNEL m Irish |
| DONNELLY f & m Irish |
| DONOVANH m Irish |
| DONYELLE m & f Irish, Biblical |
| DOOLEY m Irish |
| DRAIGHEAN f Irish |
| DRAYUN f Irish |
| DREMA f Irish |
| DUBHSHLÁINE f Irish |
| DUBLIN f & m Irish |
| DUFFY m Irish |
| DUGGINS m & f Irish |
| DUIBLINN f Irish |
| DULANYA f Irish |
| DÚNLAITH f Irish |
| DUVESSA f Irish |
| EDEL f Irish, ? |
| EDEL f English, Irish |
| EDEL f Irish |
| EDEL f Irish, Austrian, Danish |
| EGAN m Irish |
| EILA f English, Irish |
| EILIAN f Irish |
| EILY f Irish, English |
| EIMILE f Irish |
| EIRE f Irish |
| EITHNA f Irish |
| ELAN f Irish |
| ELLEANNA f English, Scottish, Irish |
| ELPHABA f Irish, ? |
| EOFIE f Irish, Scottish |
| EREIN f Irish |
| EREMON m Irish Mythology |
| ÉRNE f Irish Mythology, Irish |
| ETHNIU f Irish Mythology |
| EVANNA f Irish |
| EVANNA f Irish |
| EVANNA f Irish |
| EVANNA f Irish |
| EVANNA f Irish |
| EVERLY f & m Irish |
| EVIN m Irish |
| FAGAN m Irish |
| FAGAN m Irish |
| FAINCHE f Irish |
| FÁINNE f Irish |
| FALON f Irish |
| FALON f Irish |
| FANCHE f Irish |
| FARREL m English, Irish |
| FATE f Ancient Roman, Celtic Mythology, Egyptian Mythology, Irish Mythology |
| FEARGAL m Irish |
| FEENA f Irish |
| FEGAN m English, Irish |
| FEGAN f Scottish, Irish |
| FELIMY m Irish |
| FERDIA m Irish, Irish Mythology |
| FERRIS m English, Irish, Scottish |
| FIACH m Irish |
| FIACH m Irish |
