| Anicetus | | - | Ancient Greek (Latinized) | |
| Antigonus | | an-TIG-ə-nəs (English) | Ancient Greek (Latinized) | |
| Antiochus | | - | Ancient Greek (Latinized) | |
| Antipater | | an-TI-pə-tər (English) | Ancient Greek (Latinized) | |
| Arcadius | | - | Ancient Greek (Latinized) | |
| Archelaus | | ahr-kee-LAY-əs (English) | Ancient Greek (Latinized), Biblical Latin, Biblical | |
| Aristarchus | | - | Ancient Greek (Latinized) | |
| Aristides | | ah-ree-STEE-dhes (Spanish), ə-reesh-TEE-dəsh (Portuguese), ə-reesh-CHEE-jəsh (Brazilian Portuguese) | Ancient Greek (Latinized), Spanish, Portuguese | |
| Aristocles | | - | Ancient Greek (Latinized) | |
| Arsenius | | - | Ancient Greek (Latinized) | |
| Artemius | | - | Ancient Greek (Latinized) | |
| Athanasius | | ath-ə-NAY-shəs (English) | Ancient Greek (Latinized) | |
| Auxentius | | - | Ancient Greek (Latinized) | |