| Aristeides | | - | Ancient Greek | |
| 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) | |
| Aristodemos | | - | Ancient Greek, Greek Mythology | |
| Aristokles | | - | Ancient Greek | |
| Aristomache | | - | Ancient Greek | |
| Ariston | | - | Ancient Greek | |
| Aristophanes | | - | Ancient Greek | |
| Aristoteles | | - | Ancient Greek | |
| Aristotle | | AR-ə-stah-təl (English), ER-ə-stah-təl (English) | Ancient Greek (Anglicized) | |
| Arkadios | | - | Ancient Greek | |
| Arminius | | - | Ancient Germanic (Latinized) | |
| ArnÓRr | | - | Ancient Scandinavian | |
| Arn&Thorn;ÓRr | | - | Ancient Scandinavian | |
| ArnbjÖRg | | - | Ancient Scandinavian, Icelandic | |