| Official Name: | Ust-Buzulukskaya |
| Native Name: | Усть-Бузулукская |
| Settlement Type: | Stanitsa |
| Pushpin Map: | Russia Volgograd Oblast#Russia |
| Subdivision Type: | Country |
| Subdivision Name: | Russia |
| Subdivision Name1: | Volgograd Oblast |
| Subdivision Name3: | Alexeyevsky District |
| Subdivision Type4: | Municipality |
| Utc Offset1: | +4:00 |
| Coordinates: | 50.1667°N 51°W[1] |
Ust-Buzulukskaya (Russian: Усть-Бузулукская) is a rural locality (a stanitsa) and the administrative center of Ust-Buzulukskoye Rural Settlement, Alexeyevsky District, Volgograd Oblast, Russia. The population was 2,364 as of 2010.[2] There are 32 streets.[3]
Ust-Buzulukskaya is located on the right bank of the Khopyor River, 20 km south of Alexeyevskaya (the district's administrative centre) by road. Lunyakinsky is the nearest rural locality.[4]