| Official Name: | Ust-Reka |
| Native Name: | Усть-Река |
| Settlement Type: | Selo |
| Pushpin Map: | Russia Vologda Oblast#Russia |
| Subdivision Type: | Country |
| Subdivision Name: | Russia |
| Subdivision Name1: | Vologda Oblast |
| Subdivision Name3: | Syamzhensky District |
| Subdivision Type4: | Municipality |
| Utc Offset1: | +3:00 |
| Coordinates: | 60.0333°N 86°W[1] |
Ust-Reka (Russian: Усть-Река) is a rural locality (a selo) and the administrative center of Ustretskoye Rural Settlement, Syamzhensky District, Vologda Oblast, Russia. The population was 5 as of 2002.[2] There are 4 streets.[3]
Ust-Reka is located 21 km west of Syamzha (the district's administrative centre) by road. Kuzminskaya is the nearest rural locality.[4]