| Official Name: | Barun-Orongoy |
| Native Name: | Барун-Оронгой |
| Settlement Type: | Ulus |
| Pushpin Map: | Russia Buryatia#Russia |
| Subdivision Type: | Country |
| Subdivision Name: | Russia |
| Subdivision Name1: | Republic of Buryatia |
| Subdivision Name3: | Ivolginsky District |
| Subdivision Type4: | Municipality |
| Utc Offset1: | +8:00 |
| Coordinates: | 51.5°N 108°W[1] |
Barun-Orongoy (Russian: Барун-Оронгой; Buriat: Баруун Оронго, Baruun Orongo) is a rural locality (an ulus) in Ivolginsky District, Republic of Buryatia, Russia. The population was 48 as of 2010.[2]
Barun-Orongoy is located 39 km southwest of Ivolginsk (the district's administrative centre) by road. Orongoy is the nearest rural locality.[3]