| Official Name: | Oktyabrsky |
| Native Name: | Октябрьский |
| Settlement Type: | Settlement |
| Pushpin Map: | Russia Buryatia#Russia |
| Subdivision Type: | Country |
| Subdivision Name: | Russia |
| Subdivision Name1: | Republic of Buryatia |
| Subdivision Name3: | Kyakhtinsky District |
| Subdivision Type4: | Municipality |
| Utc Offset1: | +8:00 |
| Coordinates: | 50.2167°N 111°W[1] |
Oktyabrsky (Russian: Октябрьский) is a rural locality (a settlement) in Kyakhtinsky District, Republic of Buryatia, Russia. The population was 345 as of 2010.[2] There are 8 streets.
Oktyabrsky is located 63 km southeast of Kyakhta (the district's administrative centre) by road. Bolshaya Kudara is the nearest rural locality.[3]