Abán (abbot)  

Ábartach (Feat-performing one)

Abbán (Little abbot)

Ábhartach (Feat-performing one)

Ábraham  

Ádam  

Adare (Ford of the oak)

Adhamh (Of the earth)

Adhamhnán (Timorous one)  

Adhnár (Very modest)

Adnár (Very modest)

Adomnán (Timorous one)

Áed (Fire)

Áedach (Derived from Áed (fire))

Aedan (Born of fire)

Áedgal (Possessing the powers of "Áed" (fire))

Áedgen (Born of fire)

Aedh (Fire)

Áeducan (Dim. form of Áed (fire))

Aeneas  

Aengus (Great strength)  

Ága (Contentious, warlike)

Ágach (Contentious, warlike)

Aghaderg (From the red ford)

Ághdha (Contentious, warlike)

Ághmach (Contentious, warlike)

Ahearn (Steward)

Aí (Poetic inspiration, learning)

Aibhstín  

Aichear (Sharp, keen, fierce)

Aicher (Sharp, keen, fierce)

Aidan (Fiery one)  

Aidhleart  

Aidrean  

Aigleach (Cautious, ready)

Ailbe (Bright)

Ailbhe (Bright)  

Ailbhín  

Ailchú (Gentle hound)

Ailéin  

Ailellán (Dim, form of Ailil (elf, sprite))

Áilgenach (Soft, mild)

Áilgenán (Soft, mild person)

Áilgesach (Desirous, eager, lustful)

Áilgheanach (Soft, mild)

Áilgheanán (Soft, mild person)

Áilgheasach (Desirous, eager, lustful)

Ailill (Elf)  

Ailillán (Dim, form of Ailil (elf, sprite))

Ailillén (Dim, form of Ailil (elf, sprite))

Ailin (Handsome)  

Áilíosach (Desirous, eager, lustful)

Ailithir (A pilgrim)

Aimhirghin (Born of song)

Aimirgin (Born of song)

Ainbheartach (Doer of evil deeds)

Áindle (Hero,champion, warrior)

Aindréas  

Aindriú  

Ainéislis  

Áinle (Hero,champion, warrior)

Ainmere (Great lord, leader)

Ainmire (Great lord, leader)

Airard (Very tall)

Airbertach (Skilled, ingenious)

Airbheartach (Skilled, ingenious)

Airechtach (Having many followers)

Airleas (Pledge)

Airthaile (Abundance, plenty)

Airtín (Dim. form of Art)

Airttíne (Dim. form of Art)

Al (Handsome)

Alabhaois  

Alan (Handsome)

Alaois  

Alban (Rock)

Albanach  

Albert (noble or bright)

Allan (Harmony)

Allen (Handsome)

Alleyne (Cheerful)

Alphonsus (Noble, ready)

Alroy (Red head boy)

Alsander  

Amargein (Born of song)

Amblaoibh (Relic)

Ambros (Immortal)  

Amhlaoibh (Relic)

Ámhra (Wonderful)

An tUasal  

Anamcha (Spirited)  

Anfudán (Tempestuous, fiery person)

Angus ("one choice")

Ánle (Hero,champion, warrior)

Anlón (Great hound, warrior)  

Anluan (Champion)

Anmchaid (Spirited)

Annaduff (From the black marsh)

Anraí  

Ánrothán (Travelling sun, champion, hero)

Antaine (Praiseworthy)  

Antóin  

Aodghan (Little fire)

Aodh (Fire)  

Aodhach (Derived from Áed (fire))

Aodhagán (Dim. form of Áed (fire))

Aodhal (Possessing the powers of "Áed" (fire))

Aodhan (Fire)  

Aodhfin (White Fire)

Aodhfoinn (White fire)

Aoi (Poetic inspiration, learning)

Aoidhghean (Born of fire)

Aonas  

Aonghus ("one choice")  

Aongus (One strength)

Aralt (Leader)  

Árchú (Hound of slaughter)

Ardagh (From the high field)

Ardal (High valour)

Ardan (High inspiration)

Ardgar (Fierce one)

Ardghal (High valour)

Ardkill (From the high church)

Arlen (A pledge)

Árón  

Arrachtán (Strong, vigorous, bold person)

Art (Warrior/Champion)

Artagán (Dim. of Art (warrior, champion))

Artán (Dim. of Art (warrior, champion))

Artegal (High honour)

Artgal (Fierce one)  

Arthgallo (Courageous)

Arthur (Warrior/champion)

Artucán (Dim. of Art (warrior, champion))

Artúr  

Augaire (Shepherd)

Aurchlossach (Famous, reputable)

Aurthuile (Abundance, plenty)

Baccán (Little man)

Baethan (Foolish)

Bailintin (Valiant)

Bain (Fair-haired)

Baird (A poet/bard)

Bairn (Child)

Bairre (Fair-haired)

Bairrfhoinn (Fair-haired)

Bairríonn (Fair-haired)

Bairtliméad (Irish form of Bartholomaeus)

Baiste (Holy)

Banan (White)

Banbhan (A piglet)

Baoithín (Vain, wreckless)

Baoth (Vain, wreckless)

Bard (A singer/poet)

Bardán (Poet)

Barr (Tip, point)

Barra  

Barram (Handsome)

Barry (Spear-like)

Beagan (Little one)

Beanón (Benign)

Bearach (Pointed/sharp)

Bearnárd  

Beartlaidh (From the birch tree meadow)

Beattie (Provider)

Becan (Little one)

Beegan (Little)

Behan (Bee)

Behellagh (Foolish pride)

Beircheart (Shining army)  

Beirgin (Soldier)

Benen (Kind)

Béoán (Lively lad)

Beoaodh (Living fire)

Beolagh (Foolishly brave)

Berach (Sharp)

Bercnan (Foolish pride)

Bhalronta  

Blaine (Thin)

Blair (From the plain)

Blámhac (Famous, reknowned son)

Blar (From the fields)

Blathma (Flower)

Blian (Thin)

Boetius (Foolish Pride)

Bohannon (Son of Owen)

Boine (White cow)

Bradach  

Bradaigh (Spirited)  

Braddon (Broad hillside)

Braden (Salmon)

Bradon (Broad hillside)

Brady (Irish surname)

Braiain  

Bran (Raven)

Branacán (Brannigan)

Branán (Brennan)

Brandan (Sword)

Brandon (Prince or brave)

Brandubh (Black raven)

Brann (Raven)

Brannagh (Raven)

Brannon (From the beacon hill)

Braoin (Sadness)

Brea (Hill)

Breac (Freckled)

Breacán (Little freckled one)  

Bréanainn (A prince)  

Breandan (Little raven, brave)  

Breas (Beautiful)

Breasal (Pain, a war)  

Breatnach  

Breck (Freckled)

Brendan (Raven)

Brennan (Little raven)

Bresal (Pain, a war)

Bressal (A battle)

Briain (High, noble)

Brian (High, noble)  

Briartach (Skilled seaman)

Bricín (Little specked one)

Brien  

Bríon (Noble)  

Brodie (A ditch)

Bruadar (A dream)

Bruatar (A dream)

Brugach (Rich in lands)

Buach (Victorious)  

Búadach (Victorious)

Buadh (Victorious)

Buadhach (Victorious)  

Buagh (Victorious)

Buan (Lasting, enduring)

Buckley (A boy)

Burne (From the brook)

Burnell (Strong as a bear)

Cadán (Little battle)  

Cadell (Little battle)

Cadhla  

Cáel (Slender)

Cáelán (Little slender one)

Cailín  

Cainneach  

Calbhach (Bald)

Caley (Slender)

Callahan (Little bright-headed one)

Canice (Handsome)

Caoimheán (Little comely one)

Caoimhín (Little comely one)  

Caol  

Caolán (Slender lad)  

Carey (Loved one)

Carlin (Little champion)

Carrick (Rocky cliff)

Carroll (Fierce warrior)

Carthach (Loving person)

Cary (Loved one)

Casey (Vigilant)

Cassán (Curly-haired)

Cassidy (Clever)

Cathal (Battle ruler)  

Cathan (Of the battle)

Cathasaigh  

Cathmor (Great warrior)

Cavan (Handsome)

Ceanannas  

Ceannmúir  

Cearbhall (Hacker)

Ceiteach  

Christie (Follower of Christ)

Cian (Ancient, distant)  

Ciaran (Dark)  

Cillian  

Cillín (Little church)  

Cionnaola (Wolf-head)

Clancy (Red warrior)

Cleary (Scholar)

Coileán (Young warrior)

Cóilín  

Coilm  

Colm (Dove)  

Colmcille  

Comhaill  

Comhrai  

Conaill  

Conall (Strong as a wolf)  

Conan (Wise)  

Conchobar  

Conchubhar (Hound-lover)  

Conchúir (Hound-lover)

Conchúr  

Concobhar  

Conlan (Hero)

Conn (Chief)  

Conroy (Wise)

Conway (Yellow hound)

Cormac (Lad of the chariot)  

Creag  

Críostóir (Christ-lover)  

Cronan (Swarthy)

Cuirtéis  

Cumarán  

Cúmhaí  

Curran (Irish surname)