| Official Name: | Ust-Pyzha |
| Native Name: | Усть-Пыжа |
| Settlement Type: | Selo |
| Pushpin Map: | Russia Altai Republic#Russia |
| Subdivision Type: | Country |
| Subdivision Name: | Russia |
| Subdivision Name1: | Altai Republic |
| Subdivision Name3: | Turochaksky District |
| Subdivision Type4: | Municipality |
| Utc Offset1: | +7:00 |
| Coordinates: | 51.85°N 92°W[1] |
Ust-Pyzha (Russian: Усть-Пыжа; Southern Altai: Пыжы-Оозы, Pıjı-Oozı) is a rural locality (a selo) in Turochaksky District, the Altai Republic, Russia. The population was 158 as of 2016.[2] There are 5 streets.
Ust-Pyzha is located 54 km south of Turochak (the district's administrative centre) by road. Kebezen is the nearest rural locality.[3]