| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Ordoy-Adag | city | Buryatiya | Russia | 52.02 | 109.80 | 2509 | 149 |
| Oreshkova | city | Buryatiya | Russia | 51.85 | 107.63 | 1938 | 112243 |
| Orkalikan | city | Buryatiya | Russia | 56.73 | 111.97 | 3523 | 0 |
| Orkolikan | city | Buryatiya | Russia | 56.73 | 111.97 | 3523 | 0 |
| Orlik | city | Buryatiya | Russia | 52.52 | 99.83 | 4537 | 0 |
| Orochen | city | Buryatiya | Russia | 55.52 | 112.28 | 2654 | 0 |
| Orochenka | city | Buryatiya | Russia | 54.40 | 114.50 | 3349 | 0 |
| Orod | city | Buryatiya | Russia | 51.90 | 109.65 | 2509 | 149 |
| Orodoy-Adag | city | Buryatiya | Russia | 52.02 | 109.80 | 2509 | 149 |
| Oron | city | Buryatiya | Russia | 54.80 | 112.15 | 3743 | 0 |
| Orongoi | city | Buryatiya | Russia | 51.52 | 107.06 | 1689 | 298 |
| Orongoy | city | Buryatiya | Russia | 51.52 | 107.06 | 1689 | 298 |
| Orot | city | Buryatiya | Russia | 51.90 | 109.65 | 2509 | 149 |
| Orshan Sidzhoy Settlement | city | Buryatiya | Russia | 50.42 | 106.67 | 2509 | 745 |
| Orshan-Sidzhiy | city | Buryatiya | Russia | 50.42 | 106.67 | 2509 | 745 |