| # | Navn | Oprindelse | Betydning | Køn | Gem |
|---|---|---|---|---|---|
| 1 | Abban | Irish | Abbot. | M | |
| 2 | Abracham | Irish | Irish form of Abraham. | M | |
| 3 | Achaius | Irish | Horseman. | M | |
| 4 | Adamnan | Irish | Little Adam. | M | |
| 5 | Adare | Irish | From the ford of the oak tree. | M | |
| 6 | Addergoole | Irish | From between two fords. | M | |
| 7 | Aderrig | Irish | From the red ford. | M | |
| 8 | Adhamh | Irish | Of the earth. | M | |
| 9 | Adhamhnan | Irish | Variant of Adamnan: Little Adam. | M | |
| 10 | Aeary | Irish | Scholar. | M | |
| 11 | Aedus | Irish | Fire. | M | |
| 12 | Aeneas | Irish | Praise. | M | |
| 13 | Aengus | Irish | One vigor. | M | |
| 14 | Aghaderg | Irish | From the red ford. | M | |
| 15 | Aghamore | Irish | From the great field. | M | |
| 16 | Aghy | Irish | Friend of horses. | M | |
| 17 | Aguistin | Irish | Majestic. | M | |
| 18 | Ahane | Irish | From the little ford. | M | |
| 19 | Ahearn | Irish | Lord of the horses. | M | |
| 20 | Ahern | Irish | Lord of the horses. | M | |