Name | Gender | Origin |
| adair | Boy | Celtic Baby Names |
| adsaluta | Girl | Celtic Baby Names |
| Adair | Boy | Celtic Baby Names |
| Aengus | Boy | Celtic Baby Names |
| Afric | Girl | Celtic Baby Names |
| Africa | Girl | Celtic Baby Names |
| Ahearn | Boy | Celtic Baby Names |
| Ahern | Boy | Celtic Baby Names |
| Ahern | Boy | Celtic Baby Names |
| Aidan | Boy | Celtic Baby Names |
| Aiden | Boy | Celtic Baby Names |
| Aife | Girl | Celtic Baby Names |
| Aife | Girl | Celtic Baby Names |
| Aifric | Girl | Celtic Baby Names |
| Aigneis | Girl | Celtic Baby Names |
| Aigneis | Girl | Celtic Baby Names |
| Ailbe | Boy | Celtic Baby Names |
| Ailidh | Girl | Celtic Baby Names |
| Ailidh | Girl | Celtic Baby Names |
| Ailill | Boy | Celtic Baby Names |