| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Ognevka | city | Respublika Altay | Russia | 50.25 | 85.5166667 | 3464 | 131 |
| Ognëvka | city | Respublika Altay | Russia | 50.25 | 85.5166667 | 3464 | 131 |
| Oirat-Tura | city | Respublika Altay | Russia | 51.9561111 | 85.955 | 912 | 1811 |
| Oirot-Tura | city | Respublika Altay | Russia | 51.9561111 | 85.955 | 912 | 1811 |
| Onguday | city | Respublika Altay | Russia | 50.75 | 86.15 | 2687 | 140 |
| Oroktoy | city | Respublika Altay | Russia | 51.055 | 86.1002778 | 2729 | 253 |
| Ortolyk | city | Respublika Altay | Russia | 50.05 | 88.5 | 5892 | 70 |
| Oy-Bok | city | Respublika Altay | Russia | 50.9166667 | 84.8166667 | 3421 | 243 |
| Oyboy | city | Respublika Altay | Russia | 50.0666667 | 85.8666667 | 4707 | 131 |
| Oyrot-Tura | city | Respublika Altay | Russia | 51.9561111 | 85.955 | 912 | 1811 |
| Ozero-Kureyevo | city | Respublika Altay | Russia | 52.4666667 | 86.7333333 | 846 | 123 |
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