| Official Name: | Semyonovka |
| Native Name: | Семёновка |
| Settlement Type: | Selo |
| Pushpin Map: | Russia Altai Krai#Russia |
| Subdivision Type: | Country |
| Subdivision Name: | Russia |
| Subdivision Name1: | Altai Krai |
| Subdivision Name3: | Kulundinsky District |
| Subdivision Type4: | Municipality |
| Utc Offset1: | +7:00 |
| Coordinates: | 52.55°N 98°W[1] |
Semyonovka (Russian: Семёновка) is a rural locality (a selo) and the administrative center of Semyonovsky Selsoviet, Kulundinsky District, Altai Krai, Russia. The population was 404 as of 2013.[2] There are 4 streets.
Semyonovka is located 37 km east of Kulunda (the district's administrative centre) by road. Ozyornoye is the nearest rural locality.[3]