| Official Name: | Konstantinovka |
| Native Name: | Константиновка |
| 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: | 52.6167°N 83°W[1] |
Konstantinovka (ru|Константиновка) is a rural locality (a selo) and the administrative center of Konstantinovsky Selsoviet, Kulundinsky District, Altai Krai, Russia. The population was 344 as of 2013.[2] There are 4 streets.
Konstantinovka lies in the Kulunda Steppe by lake Bolshoye Shklo-Ushkaly to the north.[3] [4] It is located 18 km northeast of Kulunda (the district's administrative centre) by road. Myshkino is the nearest rural locality.[5]
