| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Arkadios | - | Ancient Greek | ||
| Arminius | - | Ancient Germanic (Latinized) | ||
| Arnifrid | - | Ancient Germanic | ||
| Arnold | AHR-nəld (English), AHR-nawlt (German) | English, German, Ancient Germanic | ||
| Arnulf | - | German, Ancient Germanic | ||
| Arsenios | - | Ancient Greek | ||
| Arsenius | - | Ancient Greek (Latinized) | ||
| Artemidoros | - | Ancient Greek | ||
| Artemios | - | Ancient Greek | ||
| Artemisia | - | Ancient Greek | ||
| Artemisios | - | Ancient Greek | ||
| Artemius | - | Ancient Greek (Latinized) | ||
| Artemon | - | Ancient Greek | ||
| Ascelin | - | Ancient Germanic | ||
| Asco | - | Ancient Germanic |