| Seán 'ac Dhonncha | Personne | Homme | Irlande | 1919-10-02 | County Galway, Connaught , Irlande | 1996-12-14 | | |
| Johnny ‘Nóra Aodha’ | Personne | | County Cork , Munster, Irlande | 1886 | | 1928 | | |
| "The Art Crimes Band" | Groupe | | Royaume-Uni | 2011 | Irlande | | | |
| Kraft (IE) | | | Irlande | | | | | |
| (retards) | Groupe | | Irlande | 2004-12-31 | Dublin, County Dublin, Leinster, Irlande | [inconnue] | | |
| (sic) | Groupe | | Irlande | 1996 | Dublin, County Dublin, Leinster, Irlande | 1999 | Dublin, County Dublin, Leinster, Irlande | |
| [R]evolution Of A Sun | Groupe | | Irlande | | Cork, County Cork , Munster, Irlande | | | |
| The #1s | Groupe | | Dublin, County Dublin, Leinster, Irlande | 2011-06-06 | Killiney, County Dublin, Leinster, Irlande | | | |
| +DuLT+ | Personne | Femme | Irlande | | | | | |
| ≽ܫ≼ | Personne | | Irlande | | | | | |
| ◉ | Personne | | Irlande | | | | | |
| 0phelia | Personne | Femme | Cork, County Cork , Munster, Irlande | | | | | |
| The 2 Johnnies | Groupe | | Irlande | 2017 | | | | |
| 2haf | | | Dublin, County Dublin, Leinster, Irlande | | | | | |
| 3 on the Bund | Groupe | | Irlande | 2019-03 | | | | |
| 3epkano | Groupe | | Dublin, County Dublin, Leinster, Irlande | 2004 | Dublin, County Dublin, Leinster, Irlande | | | |
| The 4th State | | | Irlande | | | | | |
| 5daysandcounting | Groupe | | Irlande | | County Dublin, Leinster, Irlande | | | |
| 5th Gear Music | Groupe | | Dublin, County Dublin, Leinster, Irlande | 2022-03-08 | | | | |
| 7una | Personne | Femme | Dublin, County Dublin, Leinster, Irlande | | | | | |
| 9thchord | Personne | Homme | Galway, County Galway, Connaught , Irlande | | Barcelona, Barcelona , Catalunya , Espagne | | | |
| 12 Gauge Outrage | | | Irlande | | Irlande | | | |
| 20 Bulls Each | Groupe | | Dublin, County Dublin, Leinster, Irlande | | | | | |
| 21 Demands | Groupe | | Irlande | 2005 | | | | |
| 49th & Main | Groupe | | Kilkenny, County Kilkenny, Leinster, Irlande | | Kilkenny, County Kilkenny, Leinster, Irlande | | | |
| 66e | Groupe | | Dublin, County Dublin, Leinster, Irlande | 2002 | | | | |
| 79Cortinaz | Groupe | | Irlande | 2003 | | | | |
| 80s Icon Show | Groupe | | Irlande | | | | | |
| 93 Acres | Personne | Homme | Irlande | | | | | |
| 100 Sparrows | Personne | Homme | Dublin, County Dublin, Leinster, Irlande | 1977-05-27 | Dublin, County Dublin, Leinster, Irlande | | | |
| 100% Pure Irish Dance | Groupe | | Irlande | | | | | |
| 666cmg | Personne | Homme | Irlande | | | | | |
| 1000 Beasts | Personne | Homme | Irlande | | | | | |
| A Bad Diana | Personne | Femme | Irlande | | | | | |
| A Clatter and Drone | Groupe | | Dublin, County Dublin, Leinster, Irlande | | | | | |
| A House | Groupe | | Irlande | 1985 | Dublin, County Dublin, Leinster, Irlande | 1997 | | |
| A Lazarus Soul | Groupe | | Dublin, County Dublin, Leinster, Irlande | 2001-04-01 | | | | |
| A Ritual Sea | Groupe | | Dublin, County Dublin, Leinster, Irlande | | Dublin, County Dublin, Leinster, Irlande | | | |
| A.2.Z | Personne | Homme | Irlande | | | | | |
| A3 | Groupe | | Cork, County Cork , Munster, Irlande | 2023-03-08 | Cork, County Cork , Munster, Irlande | | | 4 |
| A10Sín | Personne | Homme | Galway, County Galway, Connaught , Irlande | | | | | |
| AaronC | Personne | Homme | Drogheda, County Louth, Leinster, Irlande | 2006 | | | | |
| AaronMusic | Groupe | | Irlande | 2022-10-09 | Irlande | | | 5 |
| ABA | Autre | | Irlande | | | | | |
| Abaddon Incarnate | Groupe | | Irlande | 1994 | Dublin, County Dublin, Leinster, Irlande | | | 5 |
| ABBA‐esque | Groupe | | Irlande | 1996-01 | County Dublin, Leinster, Irlande | | | |
| Abbacaxi | Personne | Homme | Dublin, County Dublin, Leinster, Irlande | 1992-01-30 | | | | |
| Ashley Abbedeen | Personne | Femme | Irlande | | | | | |
| The Abbey Céilí Band | Groupe | | County Cork , Munster, Irlande | 1995 | County Cork , Munster, Irlande | | | |
| Abbeyfolk | Groupe | | Irlande | | | | | |
| Thomas Kingsmill Abbott | Personne | Homme | | 1829-03-26 | Dublin, County Dublin, Leinster, Irlande | 1913-12-18 | | |
| Abhor | | | Irlande | 1994 | Cork, County Cork , Munster, Irlande | [inconnue] | | |
| Able Archer | Groupe | | Dublin, County Dublin, Leinster, Irlande | | Dublin, County Dublin, Leinster, Irlande | | | |
| Aborted Earth | Groupe | | Dublin, County Dublin, Leinster, Irlande | 2018 | Dublin, County Dublin, Leinster, Irlande | | | |
| Absolutist | Groupe | | Irlande | | | | | |
| Abuse Potential | | | Irlande | | | | | |
| ABYSM | Personne | | Cork, County Cork , Munster, Irlande | | | | | |
| Abyss Gazes | Groupe | | Pologne | 2018 | Clonmel, County Tipperary, Munster, Irlande | | | |
| Abyssery | Groupe | | Dublin, County Dublin, Leinster, Irlande | 2023 | | | | |
| The Academic | Groupe | | Irlande | 2013-11 | | | | |
| Cvartetul Academica | Groupe | | Irlande | 1967 | București , Roumanie | [inconnue] | | |
| Accidents in the Workplace | Groupe | | Dundalk, County Louth, Leinster, Irlande | | Dundalk, County Louth, Leinster, Irlande | | | |
| Aces Wild | Groupe | | Irlande | 1999 | Dublin, County Dublin, Leinster, Irlande | | | |
| The Achill Sound | Groupe | | Irlande | | | | | |
| Acrid Nebula | Groupe | | Irlande | 2007 | | 2011 | | |
| Acrobat | Groupe | | Dublin, County Dublin, Leinster, Irlande | 2012-01-01 | Dublin, County Dublin, Leinster, Irlande | | | |
| Tom Acton | Personne | Homme | Dublin, County Dublin, Leinster, Irlande | | | | | |
| Ad Astra Chamber Orchestra | Orchestre | | Dublin, County Dublin, Leinster, Irlande | 2019 | | | | |
| Ādam | Personne | Homme | Irlande | | | | | |
| Adam's Curse | Groupe | | Irlande | | | | | 3 |
| David Adams | Personne | Homme | Irlande | | Dublin, County Dublin, Leinster, Irlande | | | |
| Robbie Adams | Personne | Homme | Los Angeles, California , États-Unis | | Dublin, County Dublin, Leinster, Irlande | | | |
| Sebastian Adams | Personne | Homme | Irlande | 1991 | | | | |
| Adaneya | Personne | | Galway, County Galway, Connaught , Irlande | | | | | |
| Adebisi Shank | Groupe | | Irlande | 2006-08 | Wexford, County Wexford, Leinster, Irlande | | | 3 |
| Adelante | Groupe | | Irlande | | | | | |
| Adeyhawke | Personne | Homme | Dublin, County Dublin, Leinster, Irlande | | | | | |
| Johnny Adger | Personne | Homme | Irlande | | | | | |
| Ádhamh | Personne | Homme | Irlande | | | | | |
| Adharca | Personne | | Irlande | | | | | |
| Adore | Groupe | | Irlande | 2022 | | | | |
| Max Adrian | Personne | Homme | Irlande | 1903-11-01 | Kilkenny, County Kilkenny, Leinster, Irlande | 1973-01-19 | Surrey, England, Royaume-Uni | |
| Adultrock | Personne | Homme | Newbridge, County Kildare, Leinster, Irlande | | | | | |
| Æ MAK | Groupe | | Dublin, County Dublin, Leinster, Irlande | | | | | |
| AeSect | Groupe | | Dublin, County Dublin, Leinster, Irlande | | | | | |
| Aeternum Vale | Groupe | | Dublin, County Dublin, Leinster, Irlande | | | | | |
| After the Ibis | Groupe | | Dublin, County Dublin, Leinster, Irlande | 2007 | Dublin, County Dublin, Leinster, Irlande | | | |
| The Aftermath | Groupe | | Irlande | 2006 | Mullingar, County Westmeath, Leinster, Irlande | | | |
| AFX | Personne | Homme | Royaume-Uni | 1971-08-18 | Limerick, County Limerick, Munster, Irlande | | | 5 |
| Agency Panic | | | Wexford, County Wexford, Leinster, Irlande | | | | | |
| Agitated Radio Pilot | Personne | | Irlande | | | | | |
| Chloë Agnew | Personne | Femme | Irlande | 1989-06-09 | Dublin, County Dublin, Leinster, Irlande | | | |
| David Agnew | Personne | Homme | | | Dublin, County Dublin, Leinster, Irlande | | | 5 |
| Elaine Agnew | Personne | Femme | Irlande | 1967 | Belfast, Belfast , County Antrim, County Down, Northern Ireland, Royaume-Uni | | | |
| ah! | Personne | Homme | Irlande | | | | | |
| Cecelia Ahern | Personne | | Irlande | 1981-09-30 | | | | |
| Cornelius ‘The Poet’ Ahern | Personne | | County Cork , Munster, Irlande | | | 1864 | | |
| Jack Ahern | Personne | | Cork, County Cork , Munster, Irlande | | | | | |
| Pat ‘Herring’ Ahern | Personne | | Irlande | | | | | |
| Brian Aherne | Personne | Homme | | 1962 | Cork, County Cork , Munster, Irlande | | | |