| Name | Origin | Meaning | Gender |
| FACHNAN | irish | saint name FAGAN, HAGAN | male |
| ABBAN | irish | abbot ABRACHAM, BRAM | male |
| Abban | Irish | Abbot | male |
| ABIAGEAL | irish | Irish form of Abigail (brings joy) ADARA, ATHDARA | female |
| Abiageal | Irish | Irish form of Abigail brings joy | female |
| Abracham | Irish | Irish form of Abraham | male |
| Adamnan | Irish | Little Adam | male |
| Adan | Irish | Little fire | female |
| Adara | Irish | From the ford at the oak tree | female |
| Adare | Irish | From the ford of the oak tree | male |
| Addergoole | Irish | From between two fords | male |
| Adeen | Irish | Little fire | female |
| Aderrig | Irish | From the red ford | male |
| Adhamh | Irish | Of the earth | male |
| Aeary | Irish | Scholar | male |
| Aengus | Irish | One vigor | male |
| Afric | Irish | Pleasant | female |
| Africa | Irish | Pleasant | female |
| Agata | Irish | Kind | female |
| Agate | Irish | Kind | female |
| Aghaderg | Irish | From the red ford | male |
| Aghadreena | Irish | From the field of the sloe bushes | female |
| Aghamora | Irish | From the great field | female |
| Aghamore | Irish | From the great field | male |
| Aghaveagh | Irish | From the field of the old tree | female |
| Aghavilla | Irish | From the field of the old tree | female |
| Aghna | Irish | Irish form of Agnes | female |
| Aghy | Irish | Friend of horses | male |
| Aguistin | Irish | Majestic | male |
| Ahana | Irish | From the little ford | female |
| Ahane | Irish | From the little ford | male |
| Ahearn | Irish | Lord of the horses | male |
| Ahern | Irish | Lord of the horses | male |
| AIBHLIN | irish | Irish/Gaelic form of Evelyn (hazelnut?) or Helen (light). | female |
| AIDAN | irish | Irish/Gaelic name meaning "Fire" or "Little fire." Variants include Adan, Adeen, Aden, Aideen, Aiden. AIGNEIS | female |
| Aidan | Irish | Little fire | female |
| Aidan | Irish | Fiery. | male |
| Aideen | Irish | Little fire | female |
| Aiden | Irish | Fiery. | male |
| Aidrian | Irish | From the Adriatic | male |
| Aifric | Irish | Pleasant | female |
| Aigneis | Irish | Pure | female |
| AILBHE | irish | "Noble, bright." Variants include Alva, Alvy, Elva, Elvy AILEEN | female |
| Aileen | Irish | Light. Variant of Evelyn. | female |
| Aileene | Irish | Variant of Evelyn. | female |
| Ailey | Irish | Light | female |
| Ailfrid | Irish | Wise | male |
| Aili | Irish | Light | female |
| Ailia | Irish | Light | female |
| Ailin | Irish | Handsome | male |
| Ailis | Irish | Noble or honest | female |
| Ailisa | Irish | Noble | female |
| Ailise | Irish | Noble | female |
| AIlison | Irish | Honest | female |
| Aindreas | Irish | Strong | male |
| Aine | Irish | Ardent | female |
| Aineislis | Irish | Glorious stand | male |
| Aingeal | Irish | Angel | female |
| Ainmire | Irish | Great lord | male |
| Airleas | Irish | Oath | female |
| Airleas | Irish | Pledge | male |
| Airrin | Irish | Unknown | female |
| Aislin | Irish | Vision | female |
| Aisling | Irish | Vision | female |
| Aislinn | Irish | Vision | female |
| AITHNE | irish | Irish/Gaelic name meaning "fire."Feminine form of Aidan. Variants include Aine, Aithnea, Eithne, Ena, Ethnah, Ethnea, Ethnee. ALASTRINA, ALASTRIONA | female |
| Alahhaois | Irish | Famous soldier | male |
| Alaina | Irish | Dear child. | female |
| Alaine | Irish | Beautiful | female |
| Alana | Irish | Beautiful: Dear child. | female |
| Alani | Irish | Dear child. | female |
| Alanna | Irish | Beautiful. Dear child. | female |
| Alannah | Irish | Dear child. | female |
| Alastrina | Irish | Feminine form of Alastair avenger | female |
| Alastriona | Irish | Feminine form of Alastair avenger | female |
| Alayna | Irish | Dear child. | female |
| Alayne | Irish | Beautiful: Dear child. | female |
| Alhan | Irish | Pale | male |
| Alhana | Irish | Beautiful dear child (same as Alana) | female |
| Alina | Irish | Beautiful | female |
| Alison | Irish | Honest | female |
| AlIyn | Irish | Beautiful | female |
| Allana | Irish | Dear child. | female |
| ALLENA | irish | Feminine form of Allen, or Alan. Means either "rock" or "beautiful." Variants include Alana, Alanna, Alena, Alene, Allene, Alleyne, Allynn, Allynne, Allynn, Alynne. ANNABLA | female |
| Allene | Irish | Beautiful | female |
| Allsun | Irish | Honest | female |
| Alma | Irish | All good | female |
| Alona | Irish | Dear child. | female |
| Alonna | Irish | Dear child. | female |
| Alphonsus | Irish | Noble or ready | male |
| Alroy | Irish | Red haired | male |
| Alsandair | Irish | Defender of man | male |
| Alvy | Irish | Olive | female |
| Alyson | Irish | Honest | female |
| Amblaoibh | Irish | Relic | male |
| Ambros | Irish | Divine | male |
| Amery | Irish | Ridge: long hill | male |
| Amhlaoibh | Irish | Irish form of Olaf | male |
| Amnchadh | Irish | Brave | male |
| Angus | Irish | One vigor | male |
| Anlon | Irish | Champion | male |
| Anluan | Irish | Champion | male |
| Anmcha | Irish | Brave | male |
| Ann | Irish | Priceless | male |
| Annabla | Irish | Irish form of Annabel lovable | female |
| Annaduff | Irish | From the black marsh | male |
| Anntoin | Irish | Priceless | male |
| Aodhfin | Irish | White fire | male |
| Aodhfionn | Irish | White fire | male |
| Aoibheann | Irish | Fair | female |
| Aoife | Irish | Irish form of Eve gives life | female |
| Aonghus | Irish | One vigor | male |
| Aralt | Irish | Leader | male |
| Ardagh | Irish | From the high field | male |
| Ardal | Irish | High honor | male |
| Ardala | Irish | High honor | female |
| Ardkill | Irish | From the high church | male |
| ArIyn | Irish | Pledge | male |
| ArIyne | Irish | Oath | female |
| Arleen | Irish | Oath | female |
| Arlen | Irish | Pledge | male |
| Arlena | Irish | Oath | female |
| Arlene | Irish | Oath | female |
| Arleta | Irish | Oath | female |
| Arlette | Irish | Oath | female |
| Arline | Irish | Oath | female |
| Arliss | Irish | High fort. A place name. | female |
| Art | Irish | Noble bear | male |
| Artegal | Irish | High honor | male |
| Arthgallo | Irish | High honor | male |
| Artur | Irish | Noble bear | male |
| Ashling | Irish | Vision | female |
| Ashlyn | Irish | Vision or dream. | female |
| Assan | Irish | Waterfall | male |
| Assana | Irish | Waterfall | female |
| Assane | Irish | Waterfall | female |
| Asthore | Irish | Loved one | female |
| Athdara | Irish | From the ford at the oak tree | female |
| Athracht | Irish | Name of a saint | female |
| Attracta | Irish | Name of a saint | female |
| Augusteen | Irish | Feminine form of Augustine great | female |
| Auley | Irish | Irish form of Olaf | male |
| Auliffe | Irish | Irish form of Olaf | male |
| Aurnia | Irish | Golden lady | female |
| Avonmora | Irish | From the great river | female |
| Avonmore | Irish | From the great river | male |
| Awnan | Irish | Little Adam | male |
| Ayden | Irish | Fiery. Alternate Spelling: Aiden. | male |
| Baethan | Irish | Foolish | male |
| Baibre | Irish | Strange | female |
| Bailintin | Irish | Valiant | male |
| Baird | Irish | Bard | male |
| Bairrfhoinn | Irish | Handsome | male |
| Ballinamore | Irish | From the great river | male |
| Ballindeny | Irish | From the town of oak wood | male |
| Banan | Irish | White | male |
| Banbhan | Irish | Piglet | male |
| Barram | Irish | Handsome | male |
| Barran | Irish | Little top | female |
| Barrie | Irish | Fair-haired. | male |
| Barrington | Irish | Fair-haired. | male |
| Barry | Irish | Fair-haired. | male |
| Beamard | Irish | Brave as a bear | male |
| Beartlaidh | Irish | From Bart's meadow | male |
| Bebhinn | Irish | Singer | female |
| Benen | Irish | Kind | male |
| Beolagh | Irish | Foolish | male |
| Berk | Irish | The birch tree meadow. Also see Barclay and Burke. | male |
| Berke | Irish | The birch tree meadow. Also see Barclay and Burke. | male |
| Berkeley | Irish | The birch tree meadow. Also see Barclay and Burke. | male |
| Berkley | Irish | The birch tree meadow. Also see Barclay and Burke. | male |
| Berneen | Irish | Feminine form of Bernard courage of a bear | female |
| Bevin | Irish | Singer | female |
| Biddy | Irish | Protective | female |
| Bidelia | Irish | Protective | female |
| Bidina | Irish | Protective | female |
| Birr | Irish | From Birr | male |
| Blaine | Irish | Thin Surname. | male |
| Blair | Irish | From the fields | male |
| Blar | Irish | From the fields | male |
| Blathma | Irish | Flower | male |
| Blathnaid | Irish | Flower | female |
| Blian | Irish | Thin | male |
| Bluinse | Irish | White | female |
| Blyana | Irish | Strong | female |
| Bohannon | Irish | Son of Owen. | male |
| Bonnar | Irish | Debonair | male |
| Bowie | Irish | Surname. | male |
| Boynton | Irish | From the town by the river Boyn | male |
| Bradaigh | Irish | Spirited | male |
| Braddon | Irish | Broad hillside. | male |
| Braden | Irish | Broad hillside. | male |
| Bradey | Irish | Spirited. | male |
| Bradon | Irish | Broad hillside. | male |
| Brady | Irish | Spirited: Broad. | male |
| Braeden | Irish | Broad hillside. | male |
| Braedon | Irish | Broad hillside. | male |
| Bram | Irish | Irish form of Abraham | male |
| Brandan | Irish | Name of a saint | male |
| Brandubh | Irish | Black raven | male |
| Branduff | Irish | Black raven | male |
| Branigan | Irish | Surname. | male |
| Brann | Irish | Raven | female |
| Brannan | Irish | Variant of Brandon. | male |
| Brannen | Irish | Variant of Brandon. | male |
| Brannon | Irish | Variant of Brandon. | male |
| Branson | Irish | Variant of Brandon. | male |
| Braoin | Irish | Sadness | male |
| Brayden | Irish | Broad hillside. | male |
| Braydon | Irish | Broad hillside. | male |
| Brea | Irish | Hill. Also variant of Brina and Breanna. | female |
| Breandan | Irish | Little raven | female |
| Breandan | Irish | Prince | male |
| Breanne | Irish | Strong | female |
| Breasal | Irish | Pain | male |
| Breck | Irish | Freckled. | female |
| Bree | Irish | Hill. Also abbreviation of Brina and Breanna. | female |
| Breeda | Irish | Protective | female |
| Breen | Irish | Fairy palace. Also variant of Brianna and Sabrina. | female |
| Breen | Irish | Sadness | male |
| Breena | Irish | Fairy palace. Also variant of Brianna and Sabrina. | female |
| Brenda | Irish | Little raven or Beacon on the hill. Feminine of Brendan. | female |
| Brendalynn | Irish | Beacon on the hill. Feminine of Brendan. | female |
| Brendan | Irish | Prince. Well known Irish playwright and wit Brendan Behan. | male |
| Brenden | Irish | Prince. Variant of Brendan. | male |
| Brendolyn | Irish | Beacon on the hill. Feminine of Brendan. | female |
| Brendon | Irish | Prince. Variant of Brendan. | male |
| Brenn | Irish | Prince. Variant of Brendan. | male |
| Brenna | Irish | Variant of Brenda meaning Beacon on the hill or little raven | female |
| Brennan | Irish | Little drop: Prince. Variant of Brendan. | male |
| Brennen | Irish | Prince. Variant of Brendan. | male |
| Brennon | Irish | Prince. Variant of Brendan. | male |
| Breslin | Irish | Surname. | male |
| Bria | Irish | Hill. Also variant of Brina and Breanna. | female |
| Briana | Irish | Strong | female |
| Brianna | Irish | Strong | female |
| Brianne | Irish | Strong | female |
| Briar | Irish | | male |
| Brid | Irish | Protective | female |
| Bride | Irish | Protective | female |
| Bridget | Irish | Strength. Mythological Celtic goddess of fire and poetry. | female |
| Brielle | Irish | Hill. Also variant of Brina and Breanna. | female |
| Brighid | Irish | Protective | female |
| Brin | Irish | Small meadow | female |
| Brina | Irish | Strong | female |
| Broderick | Irish | Surname. | male |
| Brody | Irish | From the muddy place. Surname. | male |
| Brona | Irish | Sorrow | female |
| Brone | Irish | Sorrowful | male |
| Bryanna | Irish | Strong | female |
| Bryna | Irish | Strong | female |
| Brynda | Irish | Beacon on the hill. Feminine of Brendan. | female |
| Bryne | Irish | Surname. | male |
| Brynna | Irish | | female |
| Buach | Irish | Victorious | male |
| Buagh | Irish | Victorious | male |
| Buan | Irish | Goodness | female |
| Buckley | Irish | Boy | male |
| Burne | Irish | Bear: brown. | male |
| Burnell | Irish | Bear: brown. | male |
| Burnette | Irish | Bear: brown. | male |
| Burney | Irish | Bear: brown. | male |
| Byme | Irish | Bear: brown. | male |
| Cacanisius | Irish | Son of Nis | male |
| Cace | Irish | Variant of Casey Alert: vigorous. | male |
| Cacey | Irish | Vigilant. | female |
| Cacey | Irish | Variant of Casey Alert: vigorous. | male |
| Cacia | Irish | Vigilant. | female |
| Cadee | Irish | Variant of Cady meaning a rhythmic flow of sounds. | female |
| Cadence | Irish | Variant of Cady meaning a rhythmic flow of sounds. | female |
| Cadhla | Irish | Beautiful | female |
| Cadhla | Irish | Handsome | male |
| Cadi | Irish | Variant of Cady meaning a rhythmic flow of sounds. | female |
| Cadie | Irish | Variant of Cady meaning a rhythmic flow of sounds. | female |
| Cady | Irish | Hillock. A surname or given name meaning a rhythmic flow of sounds. | female |
| Caelan | Irish | Mighty warrior | male |
| Caffar | Irish | Helmet | male |
| Caffara | Irish | Helmet | female |
| Caffaria | Irish | Helmet | female |
| Cagney | Irish | Surname. | male |
| Cahir | Irish | Wamor | male |
| Cahira | Irish | Warrior | female |
| Cailin | Irish | Girl | female |
| Cailym | Irish | Pillar of the church. | male |
| Cain | Irish | Archaic | male |
| Caiseal | Irish | From Cashel | male |
| Cait | Irish | Variant of Katherine meaning pure | female |
| Caith | Irish | From the battlefield | male |
| Caitie | Irish | Pure | female |
| Caitlan | Irish | Variant of Katherine meaning pure | female |
| Caitland | Irish | Variant of Katherine meaning pure | female |
| Caitlin | Irish | Variant of Katherine meaning pure | female |
| Caitlinn | Irish | Variant of Katherine meaning pure | female |
| Caitlyn | Irish | Variant of Katherine meaning pure | female |
| Caitlynn | Irish | Variant of Katherine meaning pure | female |
| Caitrin | Irish | Variant of Katherine meaning pure | female |
| Calbhach | Irish | Bald | male |
| Caley | Irish | Slender | male |
| Calhoun | Irish | From the narrow forest. Surname. | male |
| Callaghan | Irish | Strife | male |