- Name - ABBAN
Meaning - ABBOT
- Name - ADAMNAN
Meaning - LITTLE ADAM
- Name - ADERRIG
Meaning - FROM THE RED FORD
- Name - ADHAMH
Meaning - OF THE EARTH
- Name - AEARY
Meaning - SCHOLAR
- Name - AENGUS
Meaning - ONE VIGOR
- Name - AGHADERG
Meaning - FROM THE RED FORD
- Name - AGHAMORE
Meaning - FROM THE GREAT FIELD
- Name - AGHY
Meaning - FRIEND OF HORSES
- Name - AGUISTIN
Meaning - MAJESTIC
- Name - AHANE
Meaning - FROM THE LITTLE FORD
- Name - AHEARN
Meaning - LORD OF THE HORSES
- Name - AHERN
Meaning - LORD OF THE HORSES
- Name - AIDAN
Meaning - LITTLE FIERY ONE
- Name - AIDAN
Meaning - FIERY
- Name - AIDEN
Meaning - LITTLE FIERY ONE
- Name - AIDEN
Meaning - FIERY
- Name - AIDRIAN
Meaning - FROM THE ADRIATIC
- Name - AILFRID
Meaning - WISE
- Name - AILIN
Meaning - HANDSOME
- Name - AINDREAS
Meaning - STRONG
- Name - AINDREAS
Meaning - MANLY
- Name - AINEISLIS
Meaning - GLORIOUS STAND
- Name - AINMIRE
Meaning - GREAT LORD
- Name - AIRLEAS
Meaning - PLEDGE
- Name - ALAHHAOIS
Meaning - FAMOUS SOLDIER
- Name - ALHAN
Meaning - PALE
- Name - ALPHONSUS
Meaning - NOBLE OR READY
- Name - ALROY
Meaning - RED HAIRED
- Name - ALSANDAIR
Meaning - DEFENDER OF MAN
- Name - AMBLAOIBH
Meaning - RELIC
- Name - AMBROS
Meaning - DIVINE
- Name - AMERY
Meaning - RIDGE
- Name - AMHLAOIBH
Meaning - IRISH FORM OF OLAF
- Name - AMNCHADH
Meaning - BRAVE
- Name - ANGUS
Meaning - ONE VIGOR
- Name - ANLON
Meaning - CHAMPION
- Name - ANLUAN
Meaning - CHAMPION
- Name - ANMCHA
Meaning - BRAVE
- Name - ANN
Meaning - PRICELESS
- Name - ANNADUFF
Meaning - FROM THE BLACK MARSH
- Name - ANNTOIN
Meaning - PRICELESS
- Name - AODHFIN
Meaning - WHITE FIRE
- Name - AODHFIONN
Meaning - WHITE FIRE
- Name - AONGHUS
Meaning - ONE VIGOR
- Name - ARALT
Meaning - LEADER
- Name - ARDAGH
Meaning - FROM THE HIGH FIELD
- Name - ARDAL
Meaning - HIGH HONOR
- Name - ARDKILL
Meaning - FROM THE HIGH CHURCH
- Name - ARIYN
Meaning - PLEDGE
- Name - ARLEN
Meaning - PLEDGE
- Name - ART
Meaning - NOBLE BEAR
- Name - ART
Meaning - NOBLE
- Name - ARTEGAL
Meaning - HIGH HONOR
- Name - ARTHGALLO
Meaning - HIGH HONOR
- Name - ARTUR
Meaning - NOBLE BEAR
- Name - ARTUR
Meaning - NOBLE
- Name - ASSAN
Meaning - WATERFALL
- Name - AULEY
Meaning - IRISH FORM OF OLAF
- Name - AULEY
Meaning - ANCESTOR
- Name - AULIFFE
Meaning - IRISH FORM OF OLAF
- Name - AULIFFE
Meaning - ANCESTOR
- Name - AVONMORE
Meaning - FROM THE GREAT RIVER
- Name - AWNAN
Meaning - LITTLE ADAM
