| Official Name: | Kosoklyuchansky |
| Native Name: | Косоключанский |
| Settlement Type: | Khutor |
| Pushpin Map: | Russia Volgograd Oblast#Russia |
| Subdivision Type: | Country |
| Subdivision Name: | Russia |
| Subdivision Name1: | Volgograd Oblast |
| Subdivision Name3: | Kumylzhensky District |
| Subdivision Type4: | Municipality |
| Utc Offset1: | +4:00 |
| Coordinates: | 49.8167°N 67°W[1] |
Kosoklyuchansky (Russian: Косоключанский) is a rural locality (a khutor) in Slashchyovskoye Rural Settlement, Kumylzhensky District, Volgograd Oblast, Russia. The population was 8 as of 2010.[2] There are 3 streets.[3]
Kosoklyuchansky is located on the right bank of the Khopyor River, 22 km southwest of Kumylzhenskaya (the district's administrative centre) by road. Ostroukhov is the nearest rural locality.[4]