| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| o18 | city | Thua Thien-Hue | Vietnam | 16.55 | 107.47 | 13 | 40790 |
| o18 | city | Thua Thien-Hue | Vietnam | 16.50 | 107.45 | 72 | 47320 |
| o18 | city | Thanh Hoa | Vietnam | 20.17 | 105.65 | 39 | 29949 |
| o18 | city | Thanh Hoa | Vietnam | 20.17 | 105.63 | 59 | 29949 |
| o18 | city | Thanh Hoa | Vietnam | 20.15 | 105.45 | 282 | 31835 |
| o18 | city | Quang Tri | Vietnam | 17.05 | 107.10 | 52 | 10433 |
| oGagwini | city | KwaZulu-Natal | South Africa | -30.04 | 30.65 | 1870 | 7186 |
| oGonothini | city | KwaZulu-Natal | South Africa | -29.45 | 30.96 | 2509 | 10793 |
| oberes Waldhaus | city | Thuringen | Germany | 50.57 | 11.91 | 1669 | 5103 |
| obrębski | city | Mazowieckie | Poland | 52.49 | 21.51 | 403 | 6950 |
| ochodzki | city | Opolskie | Poland | 50.61 | 17.81 | 830 | 9050 |
| odargowski | city | Pomorskie | Poland | 54.79 | 18.12 | 183 | 3089 |
| odashi | city | Shimane | Japan | 35.19 | 132.51 | 249 | 23518 |
| odmęcki | city | Malopolskie | Poland | 50.31 | 21.00 | 830 | 6960 |
| odrowąski | city | Opolskie | Poland | 50.51 | 17.96 | 830 | 17046 |
| ogipara | city | Rangpur | Bangladesh | 26.27 | 88.89 | 164 | 67523 |
| ogrodzimski | city | Lodzkie | Poland | 51.68 | 18.98 | 830 | 5768 |
| okrąglański | city | Swietokrzyskie | Poland | 50.47 | 21.32 | 830 | 8970 |
| okrąglicki | city | Slaskie | Poland | 50.66 | 18.99 | 1049 | 6923 |
| okręski | city | Malopolskie | Poland | 50.23 | 20.76 | 830 | 6814 |
| olaczkowo | city | Wielkopolskie | Poland | 52.23 | 17.62 | 269 | 4947 |
| old blah | city | Cataluna | Spain | 41.93 | 2.26 | 1669 | 39764 |
| olhos dagua | city | Sergipe | Brazil | -10.78 | -37.68 | 1046 | 4902 |
| olimpijski | city | Wielkopolskie | Poland | 52.13 | 18.57 | 367 | 3380 |
| olszówecki | city | Wielkopolskie | Poland | 51.97 | 18.59 | 321 | 5519 |
| olszówecki | city | Swietokrzyskie | Poland | 51.04 | 20.13 | 830 | 3089 |
| olyudong | city | Jeonnam | Korea, Republic of (South) | 34.63 | 126.65 | 177 | 14554 |
| opalanecki | city | Kujawsko-Pomorskie | Poland | 52.77 | 18.72 | 347 | 4254 |
| oparczyski | city | Kujawsko-Pomorskie | Poland | 52.82 | 19.07 | 305 | 3222 |
| opolski | city | Lodzkie | Poland | 51.99 | 19.17 | 383 | 7240 |
| oraczewski | city | Lodzkie | Poland | 51.57 | 18.58 | 830 | 4257 |
| oradeas | city | Bihor | Romania | 47.07 | 21.93 | 830 | 138156 |
| oravaya Girîdaxê | city | Agri | Turkey | 39.51 | 44.29 | 4612 | 2983 |
| orleński | city | Zachodniopomorskie | Poland | 53.37 | 16.01 | 830 | 1976 |
| orta mah. | city | Sakarya | Turkey | 40.63 | 30.66 | 830 | 18329 |
| orumiye | city | Azarbayjan-e Gharbi | Iran | 37.56 | 45.07 | 4475 | 76422 |
| orzeszkowski | city | Lodzkie | Poland | 52.00 | 18.80 | 367 | 4764 |
| osada kolonii | city | Lubelskie | Poland | 52.09 | 23.31 | 830 | 1635 |
| osada leśna | city | Mazowieckie | Poland | 51.46 | 21.39 | 830 | 16392 |
| osada leśna | city | Mazowieckie | Poland | 52.88 | 21.31 | 396 | 2846 |
| osada leśna | city | Wielkopolskie | Poland | 52.09 | 16.73 | 200 | 6880 |
| osada leśna | city | Wielkopolskie | Poland | 51.60 | 18.09 | 830 | 3995 |
| osada leśna | city | Kujawsko-Pomorskie | Poland | 52.98 | 19.55 | 380 | 3466 |
| osada leśna | city | Wielkopolskie | Poland | 52.06 | 16.83 | 259 | 5214 |
| osada leśna | city | Lubelskie | Poland | 51.34 | 23.18 | 830 | 3336 |
| osada leśna | city | Malopolskie | Poland | 50.28 | 21.06 | 830 | 8825 |
| osada leśna | city | Pomorskie | Poland | 53.98 | 18.39 | 400 | 5724 |
| osada leśna | city | Kujawsko-Pomorskie | Poland | 52.91 | 18.72 | 164 | 17858 |
| osada leśna | city | Kujawsko-Pomorskie | Poland | 52.74 | 17.79 | 383 | 3123 |
| osada leśna | city | Wielkopolskie | Poland | 52.76 | 16.82 | 259 | 4013 |
| osada leśna | city | Lubuskie | Poland | 51.88 | 16.24 | 278 | 6791 |
| osada leśna | city | Slaskie | Poland | 50.78 | 18.77 | 853 | 6243 |
| osada leśna | city | Slaskie | Poland | 50.84 | 18.78 | 885 | 7400 |
| osada leśna | city | Malopolskie | Poland | 49.99 | 20.54 | 830 | 16027 |
| osada leśna | city | Mazowieckie | Poland | 52.41 | 21.41 | 377 | 9659 |
| osada leśna | city | Lubelskie | Poland | 51.92 | 22.70 | 830 | 4638 |
| osada leśna | city | Swietokrzyskie | Poland | 50.29 | 20.53 | 830 | 8733 |
| osada leśna | city | Podlaskie | Poland | 53.51 | 22.51 | 830 | 490 |
| osiekowski | city | Warminsko-Mazurskie | Poland | 53.43 | 20.14 | 830 | 1653 |
| osiński | city | Lodzkie | Poland | 51.25 | 18.97 | 830 | 3951 |
| ostrowski | city | Mazowieckie | Poland | 52.79 | 19.86 | 364 | 3090 |
| ostrowski | city | Podlaskie | Poland | 53.68 | 23.39 | 830 | 3418 |
| ostrówecki | city | Wielkopolskie | Poland | 52.54 | 17.98 | 305 | 4943 |
| osówecki | city | Swietokrzyskie | Poland | 50.61 | 21.00 | 918 | 3716 |
| owczarniański | city | Lubelskie | Poland | 50.88 | 22.20 | 856 | 18568 |
| ołaczkowo | city | Wielkopolskie | Poland | 52.23 | 17.62 | 269 | 4947 |
| oːlənhɔːɣən | city | Niedersachsen | Germany | 52.63 | 10.12 | 131 | 54565 |