| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
| Obol' | city | Vitsyebskaya Voblasts' | Belarus | 54.9425 | 30.0777778 | 492 | 1779 |
| Obolʼ | city | Vitsyebskaya Voblasts' | Belarus | 54.9425 | 30.0777778 | 492 | 1779 |
| Obukhovo | city | Vitsyebskaya Voblasts' | Belarus | 54.6261111 | 30.4016667 | 561 | 2451 |
| Ogorodniki | city | Vitsyebskaya Voblasts' | Belarus | 55.1913889 | 30.3466667 | 662 | 1666 |
| Ol'govo | city | Vitsyebskaya Voblasts' | Belarus | 55.2341667 | 30.2108333 | 538 | 148686 |
| Ol'khovik | city | Vitsyebskaya Voblasts' | Belarus | 55.065 | 30.7655556 | 646 | 1527 |
| Olʼgovo | city | Vitsyebskaya Voblasts' | Belarus | 55.2341667 | 30.2108333 | 538 | 148686 |
| Olʼkhovik | city | Vitsyebskaya Voblasts' | Belarus | 55.065 | 30.7655556 | 646 | 1527 |
| Orekhi | city | Vitsyebskaya Voblasts' | Belarus | 54.6816667 | 30.5008333 | 505 | 2436 |
| Orekhi-Vydritsa | city | Vitsyebskaya Voblasts' | Belarus | 54.6816667 | 30.5008333 | 505 | 2436 |
| Orekhovsk | city | Vitsyebskaya Voblasts' | Belarus | 54.6816667 | 30.5008333 | 505 | 2436 |
| Orlovichi | city | Vitsyebskaya Voblasts' | Belarus | 54.6636111 | 31.0469444 | 508 | 1844 |
| Orsha | city | Vitsyebskaya Voblasts' | Belarus | 54.5152778 | 30.4052778 | 515 | 120387 |
| Os'penki | city | Vitsyebskaya Voblasts' | Belarus | 54.8652778 | 30.5594444 | 488 | 1540 |
| Osinovka | city | Vitsyebskaya Voblasts' | Belarus | 55.7405556 | 30.1905556 | 682 | 1083 |
| Osinstroy | city | Vitsyebskaya Voblasts' | Belarus | 54.7180556 | 30.6608333 | 521 | 2033 |
| Osintorf | city | Vitsyebskaya Voblasts' | Belarus | 54.7180556 | 30.6608333 | 521 | 2033 |
| Osipova | city | Vitsyebskaya Voblasts' | Belarus | 54.9088889 | 30.3872222 | 475 | 1680 |
| Osipovo | city | Vitsyebskaya Voblasts' | Belarus | 54.9088889 | 30.3872222 | 475 | 1680 |
| Osʼpenki | city | Vitsyebskaya Voblasts' | Belarus | 54.8652778 | 30.5594444 | 488 | 1540 |
| Otskovaya | city | Vitsyebskaya Voblasts' | Belarus | 55.0113889 | 30.6413889 | 561 | 1530 |
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