| Official Name: | Ust-Kumir |
| Native Name: | Усть-Кумир |
| Settlement Type: | Selo |
| Pushpin Map: | Russia Altai Republic#Russia |
| Subdivision Type: | Country |
| Subdivision Name: | Russia |
| Subdivision Name1: | Altai Republic |
| Subdivision Name3: | Ust-Kansky District |
| Subdivision Type4: | Municipality |
| Utc Offset1: | +7:00 |
| Coordinates: | 51.0167°N 101°W[1] |
Ust-Kumir (Russian: Усть-Кумир; Southern Altai: Кайрукун, Kayrukun) is a rural locality (a selo) and the administrative centre of Talitskoye Rural Settlement, Ust-Kansky District, the Altai Republic, Russia. The population was 501 as of 2016.[2] There are 11 streets.
Ust-Kumir is located 38 km northwest of Ust-Kan (the district's administrative centre) by road. Talitsa is the nearest rural locality.[3]