| Official Name: | Ust-Burgaltay |
| Native Name: | Усть-Бургалтай |
| Settlement Type: | Ulus |
| Pushpin Map: | Russia Buryatia#Russia |
| Subdivision Type: | Country |
| Subdivision Name: | Russia |
| Subdivision Name1: | Republic of Buryatia |
| Subdivision Name3: | Zakamensky District |
| Subdivision Type4: | Municipality |
| Utc Offset1: | +8:00 |
| Coordinates: | 50.4167°N 110°W[1] |
Ust-Burgaltay (Russian: Усть-Бургалтай) is a rural locality (an ulus) in Zakamensky District, Republic of Buryatia, Russia. The population was 394 as of 2010.[2] There are 8 streets.
Ust-Burgaltay is located 69 km east of Zakamensk (the district's administrative centre) by road. Mikhaylovka is the nearest rural locality.[3]