| Archelaos | | - | Ancient Greek, Biblical Greek | |
| Archelaus | | ahr-kee-LAY-əs (English) | Ancient Greek (Latinized), Biblical Latin, Biblical | |
| Archimedes | | - | Ancient Greek | |
| Archippos | | - | Ancient Greek | |
| Ares | | AR-eez (English), ER-eez (English) | Greek Mythology | |
| Arethousa | | - | Greek Mythology | |
| Arethusa | | - | Greek Mythology (Latinized) | |
| Argus | | - | Greek Mythology (Latinized) | |
| Argyris | | - | Greek | |
| Argyros | | - | Ancient Greek | |
| Ariadne | | ah-ree-ahd-ne (Ancient Greek), ar-ee-AD-nee (English) | Greek Mythology | |
| Ariel | | AR-ee-əl (English), ER-ee-əl (English), AY-ree-əl (English) | Hebrew, English, French, Biblical, Biblical Greek | |
| Aris (1) | | - | Greek | |
| Aristaeus | | ar-is-TEE-əs (English) | Greek Mythology (Latinized) | |
| Aristaios | | - | Greek Mythology | |