| Official Name: | Oninoborsk |
| Native Name: | Ониноборск |
| Settlement Type: | Selo |
| Pushpin Map: | Russia Buryatia#Russia |
| Subdivision Type: | Country |
| Subdivision Name: | Russia |
| Subdivision Name1: | Republic of Buryatia |
| Subdivision Name3: | Khorinsky District |
| Subdivision Type4: | Municipality |
| Utc Offset1: | +8:00 |
| Coordinates: | 52.25°N 111°W[1] |
Oninoborsk (Russian: Ониноборск) is a rural locality (a selo) situated in Khorinsky District, Republic of Buryatia, Russia. The population was 308 as of 2010.[2] There are 6 streets.
Oninoborsk is located 21 km northeast of Khorinsk (the district's administrative centre) by road. Bulum is the nearest rural locality.[3]