| Official Name: | Demyanovka |
| Native Name: | Демьяновка |
| Settlement Type: | Selo |
| Pushpin Map: | Russia Amur Oblast#Russia |
| Subdivision Type: | Country |
| Subdivision Name: | Russia |
| Subdivision Name1: | Amur Oblast |
| Subdivision Name3: | Zavitinsky District |
| Subdivision Type4: | Municipality |
| Utc Offset1: | +9:00 |
| Coordinates: | 49.95°N 143°W[1] |
Demyanovka (ru|Демьяновка) is a rural locality (a selo) in Innokentyevsky Selsoviet of Zavitinsky District, Amur Oblast, Russia. The population was 105 as of 2018.[2] There are 2 streets.
Demyanovka is located 24 km southwest of Zavitinsk (the district's administrative centre) by road. Innokentyevka is the nearest rural locality.[3]