| Name | Meaning | Gender | Origin |
|---|
| Ariel | lioness of god | Female | Hebrew |
| Arielle | Lion Of God | Unisex | Hebrew |
| Aries | "a ram" | Male | Latin |
| Aristotle | "superior" | Male | Greek |
| Arizona | | Female | Hebrew |
| Arlene | pledge | Female | Modern |
| Arlington | | Unisex | Hebrew |
| Armand | of the army | Male | |
| Art | noble one; bear man | Male | English |
| Artemis | moon | Male | Greek |
| Arthur | Strong as a rock, noble, follower of Thor | Male | Celtic |
| Artie | Abbreviation Of Arthur - Noble; Courageous. | Unisex | English |
| Asbury | after Asbury Park, NJ | Unisex | |
| Asha | hope, life | Female | Hindi |
| Ashanti | Great African Woman | Female | African |
| Ashby | ash tree farm | Female | English |
| Asher | fortunate, lucky, blessed, happy | Male | Hebrew |
| Ashley | ash-tree | Female | English |
| Asia | East | Female | Place-name |
| Astra | like a star | Female | Latin |
| Astrid | star, super strength, divine strength | Female | Norse |
| Athena | Goddess of War | Female | Greek |
| Atticus | from Attica | Male | Latin |
| Aubrey | elf rule | Female | English |
| Auden | named after the poet W.H. Auden | Male | English |