| Arapaima | arapaima giant arapaima pirarucu |
| Arakacha | arracacha |
| Raphia | raffia |
| Aramäer | Aramaean |
| Aramäerin | Aramaean |
| Arancini | arancino |
| Aranzini | arancino |
| Avatara | avatar |
| Caracalla | Caracalla |
| Carapax | carapace |
| Karaim | Karaim |
| Karaime | Karaim |
| Präparat | compound |
| Arabien | Arabia |
| Arabist | Arabist |
| Aramäisch | Aramaic |
| aramäisch | Aramaean Aramean Aramaic |
| Ararat | Ararat |
| Arausio | Arausio |
| Arawak | Arawak Arawák |