| Official Name: | Kostovo |
| Native Name: | Костово |
| Native Name Lang: | ru |
| Settlement Type: | Selo |
| Pushpin Map: | Russia Voronezh Oblast#Russia |
| Subdivision Type: | Country |
| Subdivision Name: | Russia |
| Subdivision Type1: | Region |
| Subdivision Name1: | Voronezh Oblast |
| Subdivision Type2: | County |
| Subdivision Type3: | District |
| Subdivision Name3: | Olkhovatsky District |
| Subdivision Type4: | Municipality |
| Utc Offset1: | +3:00 |
| Coordinates: | 50.1833°N 48°W[1] |
Kostovo (Russian: links=no|Костово) is a rural locality (a selo) and the administrative center of Stepnyanskoye Rural Settlement, Olkhovatsky District, Voronezh Oblast, Russia. The population was 695 as of 2010.[2] There are 8 streets.[3]
Kostovo is located 21 km southwest of Olkhovatka (the district's administrative centre) by road. Konnoye is the nearest rural locality.[4]