| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Arthfael | - | Ancient Celtic | ||
| Ascelin | - | Ancient Germanic | ||
| Asco | - | Ancient Germanic | ||
| Asklepiades | - | Ancient Greek | ||
| Aspasia | - | Ancient Greek | ||
| Athanaric | - | Ancient Germanic | ||
| Athanas | - | Ancient Greek | ||
| Athanasia | - | Greek, Ancient Greek | ||
| Athanasios | - | Greek, Ancient Greek | ||
| Athanasius | ath-ə-NAY-shəs (English) | Ancient Greek (Latinized) | ||
| Athaulf | - | Ancient Germanic | ||
| Athenais | - | Ancient Greek | ||
| Atilius | - | Ancient Roman | ||
| Au&Eth;Rhildr | - | Ancient Scandinavian | ||
| Auda | - | Ancient Germanic |