| Angwen | A fair or beautiful spirit. |
| Angwyn | A name meaning fair or white spirit. |
| Anlon | A calm and steady individual. |
| Anluan | A warrior of great strength. |
| Anmcha | One who is deeply cherished. |
| Ann | Blessed with grace; Grace; Graceful; Merciful; Name of a king; Prayer; Priceless; Variant of Hebrew Hannah. Favor. Grace.; A variant of Hannah introduced to Britain in the 13th century, made popular in the 14th century by the cult of St Anne. The form of |
| Annabla | Irish form of Annabel lovable |
| Annaduff | From the black marsh |
| Anntoin | A name meaning highly praiseworthy. |
| Anrai | Variant of Einri: Rules the home. |
| Anstey | A form of the Greek Anastasia, meaning ressurection. |
| Aodha | Variant of Aodh: Fire; fiery. |
| Aodhaigh | Variant of Aodh: Fire; fiery. |
| Aodhfin | A fair and bright fiery one |
| Aodhfionn | A fair and bright fiery one |
| Aodhgan | Variant of Aodh: Fire; fiery; white fire. |
| Aogan | A little fire or fiery person |
| Aoibheann | A beautiful and radiant lady |
| Aralt | A noble and powerful leader. |
| Ardagh | From the high field |
| Ardala | A name meaning a holy or noble place. |
| Ardghal | Variant of Ardal: Valour; high honor. |
| Ardkill | From the high church |
| Ariene | One who is considered very holy. |
| ArIyn | A seeker of deep intelligence |
| ArIyne | One who is truly enlightened |
| Arleen | A pledge or a solemn promise. |
| Arlette | A diminutive of a noble pledge. |
| Arliss | High fort. A place name. |
| Artegal | A name meaning noble and high. |
| Arthgallo | A legendary king of the Britons. |
| Arthus | bear hero, a rock |
| Artur | A name meaning noble or bear man. |
| Ashling | A dream or a vision of the future. |
| Assan | A name meaning health or beauty. |
| Assana | One who is calm and peaceful. |
| Assane | A name meaning noble or healthy. |
| Asthore | A place of peace and high ground |
| Atawn | harmony can be used as a form of alan |
| Athdara | From the ford at the oak tree |