| Auditory system | |
| Auflance | |
| Auge | |
| Augusta | |
| Aujac | |
| Aujargues | |
| Aulas | |
| Aumessas | |
| Aure | |
| Aurillac | |
| Aurora | |
| Aurora Province | |
| Aussonce | |
| Austin | |
| Australia | |
| Australian Capital Territory | |
| Austria | |
| Authe | |
| Autonomous Region in Muslim Mindanao | |
| Autrecourt-et-Pourron | |
| Autruche | |
| Autry | |
| Auvergne | |
| Auvillers-les-Forges | |
| Avançon | |
| Avaux | |
| Aveyron | |
| Avèze | |
| Avignon | |
| Ávila | |
| awák-an | |
| áwaŋ | |
| áwe | |
| ay-asin-an | |
| ayún | |
| áyun | |
| Ayungon | |
| ayup | |
| áyup | |
| ayut | |
| Azerbaijan | |
| aŋab | |
| áŋga | |
| aŋgá-nan | |
| áŋin | |
| aŋsad | |
| áŋus | |
| baabagwáq | |
| Baao | |
| baba | |
| Amanung Sisuan |