| Celtic dog names begining from A |
| Adair |
 | From the ford by the oak trees. |
| Afric |
 | Agreeable. |
| Ahern |
 | Lord of the horses. |
| Aidan |
| Fire. |
| Aiden |
| Fire. |
| Aife |
| A great warrior woman of myth. |
| Ailis |
| Noble. |
| Aina |
| Joy. |
| Aine |
| Fire or joy. |
| Airic |
| Agreeable. |
| Al |
| Diminutive of Alan: Harmony, stone, or noble. Also fair, handsome. Originally a saint's name, it was reintroduced to Britain during the Norman Conquest, remained popular throughout the Middle Ages, and was revived in the 19th century. |
| Alain |
| Variant of Alan: Harmony, stone, or noble. Also fair, handsome. Originally a saint's name, it was reintroduced to Britain during the Norman Conquest, remained popular throughout the Middle Ages, and was revived in the 19th century. |
| Alan |
| Harmony, stone, or noble. Also fair, handsome. Originally a saint's name, it was reintroduced to Britain during the Norman Conquest, remained popular throughout the Middle Ages, and was revived in the 19th century. See also Allen. |
| Alana |
| Feminine form of Alan meaning harmony, stone, or noble. |
| Alane |
| Fair. |
| Aleen |
| Fair, good-looking. Feminine of Allen or variant of Helen. |
| Alena |
| Fair, good-looking. Feminine of Allen or variant of Helen. |
| Alene |
| Fair, good-looking. Feminine of Allen or variant of Helen. |
| Alice |
| Noble. |
| Alina |
| Fair. |
| Aline |
| Fair, good-looking. Feminine of Allen or variant of Helen. |
| Allan |
| Harmony, stone, or noble. Also fair, handsome. Originally a saint's name, it was reintroduced to Britain during the Norman Conquest, remained popular throughout the Middle Ages, and was revived in the 19th century. See also Allen. |
| Allen |
| Harmony, stone, or noble. Also fair, handsome. Originally a saint's name, it was reintroduced to Britain during the Norman Conquest, remained popular throughout the Middle Ages, and was revived in the 19th century. |
| Allie |
| Diminutive of Alan: Harmony, stone, or noble. Also fair, handsome. Originally a saint's name, it was reintroduced to Britain during the Norman Conquest, remained popular throughout the Middle Ages, and was revived in the 19th century. |
| Ally |
| Diminutive of Alan: Harmony, stone, or noble. Also fair, handsome. Originally a saint's name, it was reintroduced to Britain during the Norman Conquest, remained popular throughout the Middle Ages, and was revived in the 19th century. |
| Allyn |
| Handsome. |
| Alma |
| Good. |
| Alun |
| Harmony, stone, or noble. Also fair, handsome. Originally a saint's name, it was reintroduced to Britain during the Norman Conquest, remained popular throughout the Middle Ages, and was revived in the 19th century. |
| Alys |
| Noble. |
| Anant |
| From the stream. |
| Angus |
| Exceptionally strong. |
| Annan |
| From the stream. |
| Annwn |
| Mythical name of The Otherworld. |
| Anwyl |
| Beloved. |
| Anyon |
| Anvil. |
| Aod |
| Mythical son of Lyr. |
| Aodh |
| Fire. |
| Arawn |
| Mythical king of the Underworld. |
| Arden |
| Eager; ardent. |
| Arden |
| Lofty. Eager. |
| Ardra |
| Noble. |
| Arela |
| An oath. |
| Arlan |
| Oath. |
| Arlen |
| Oath. |
| Arlin |
| Oath. |
| Arlyn |
| Oath. |
| Art |
| Strong as a bear. |
| Arte |
| Diminutive of Arthur: Bear; rock. |
| Artek |
| Variant of Arthur: Bear; rock. |
| Artie |
| Diminutive of Arthur: Bear; rock. |
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