| Official Name: | Aya |
| Native Name: | Ая |
| Settlement Type: | Selo |
| Pushpin Map: | Russia Altai Krai#Russia |
| Subdivision Type: | Country |
| Subdivision Name: | Russia |
| Subdivision Name1: | Altai Krai |
| Subdivision Name3: | Altaysky District |
| Subdivision Type4: | Municipality |
| Utc Offset1: | +7:00 |
| Coordinates: | 51.9333°N 133°W[1] |
Aya (Russian: Ая) is a rural locality (a selo) and the administrative center of Aysky Selsoviet, Altaysky District, Altai Krai, Russia. The population was 2,233 as of 2013.[2] There are 23 streets.
Aya is located on the Katun River, 43 km east of Altayskoye (the district's administrative centre) by road. Dubrovka is the nearest rural locality.[3]