| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Oudatchny | city | Sakha (Yakutiya) | Russia | 66.43 | 112.40 | 1033 | 0 |
| Oudova | city | Pskovskaya Oblast' | Russia | 58.74 | 27.82 | 137 | 397 |
| Ouelen | city | Chukotskiy Avtonomnyy Okrug | Russia | 66.17 | -169.80 | 3 | 0 |
| Oufa | city | Bashkortostan | Russia | 54.79 | 56.05 | 324 | 181212 |
| Ouglegorsk | city | Sakhalinskaya Oblast' | Russia | 49.08 | 142.06 | 114 | 389 |
| Ouglitch | city | Yaroslavskaya Oblast' | Russia | 57.53 | 38.33 | 374 | 4825 |
| Oujour | city | Krasnoyarskiy Kray | Russia | 55.31 | 89.83 | 1227 | 745 |
| Oukhta | city | Komi | Russia | 63.57 | 53.68 | 282 | 9637 |
| Oulan-Oude | city | Buryatiya | Russia | 51.83 | 107.61 | 1669 | 94918 |
| Oulangansuu | city | Kareliya | Russia | 66.17 | 30.68 | 351 | 0 |
| Oulianovsk | city | Ul'yanovskaya Oblast' | Russia | 54.33 | 48.39 | 830 | 143391 |
| Oulyanovsk | city | Ul'yanovskaya Oblast' | Russia | 54.33 | 48.39 | 830 | 143391 |
| Ouraïm | city | Chelyabinskaya Oblast' | Russia | 55.92 | 59.53 | 1669 | 596 |
| Ourous-Martan | city | Chechnya | Russia | 43.13 | 45.54 | 830 | 40944 |
| Ous | city | Sverdlovskaya Oblast' | Russia | 60.91 | 61.52 | 298 | 149 |
| Ousman (ville) | city | Lipetskaya Oblast' | Russia | 52.05 | 39.73 | 830 | 14402 |
| Oussinsk | city | Komi | Russia | 65.99 | 57.53 | 216 | 5859 |
| Oust-Labinsk | city | Krasnodarskiy Kray | Russia | 45.21 | 39.69 | 108 | 24519 |
| Oust-Nera | city | Sakha (Yakutiya) | Russia | 64.60 | 143.25 | 1669 | 0 |
| Oustioujna | city | Vologodskaya Oblast' | Russia | 58.84 | 36.43 | 357 | 447 |
| Outas | city | Murmanskaya Oblast' | Russia | 68.40 | 29.55 | 830 | 149 |
| Outiri | city | Sakhalinskaya Oblast' | Russia | 48.80 | 142.90 | 3 | 432 |
| Outoru | city | Sakhalinskaya Oblast' | Russia | 48.80 | 142.90 | 3 | 432 |
| Outova | city | Pskovskaya Oblast' | Russia | 58.74 | 27.82 | 137 | 397 |
| Ouzlovaïa | city | Tul'skaya Oblast' | Russia | 53.98 | 38.17 | 830 | 87603 |