| Official Name: | Nizhnekayancha |
| Native Name: | Нижнекаянча |
| 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: | 51.85°N 127°W[1] |
Nizhnekayancha (Russian: Нижнекаянча) is a rural locality (a selo) in Aysky Selsoviet, Altaysky District, Altai Krai, Russia. The population was 414 as of 2013.[2] There are 9 streets.
Nizhnekayancha is located on the Katun River, 61 km southeast of Altayskoye (the district's administrative centre) by road. Ustyuba is the nearest rural locality.[3]