| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
| Oal' | city | Ostan-e Azarbayjan-e Gharbi | Iran | 38.8030556 | 46.5413889 | 3415 | 8831 |
| Oalʼ | city | Ostan-e Azarbayjan-e Gharbi | Iran | 38.8030556 | 46.5413889 | 3415 | 8831 |
| Ojaq Qeshlaq | city | Ostan-e Azarbayjan-e Gharbi | Iran | 39.25 | 48 | 1709 | 8856 |
| Ojāq Qeshlāq | city | Ostan-e Azarbayjan-e Gharbi | Iran | 39.25 | 48 | 1709 | 8856 |
| Omidcheh | city | Ostan-e Azarbayjan-e Gharbi | Iran | 38.1275 | 46.6766667 | 5337 | 8992 |
| Omīdcheh | city | Ostan-e Azarbayjan-e Gharbi | Iran | 38.1275 | 46.6766667 | 5337 | 8992 |
| Onsorood | city | Ostan-e Azarbayjan-e Gharbi | Iran | 37.8194444 | 46.2986111 | 7290 | 9031 |
| Oozoon Darreh Sofla | city | Ostan-e Azarbayjan-e Gharbi | Iran | 36.7166667 | 45.7666667 | 4868 | 8799 |
| Ordaklu | city | Ostan-e Azarbayjan-e Gharbi | Iran | 38.4258333 | 45.8055556 | 4327 | 8954 |
| Ordaklū | city | Ostan-e Azarbayjan-e Gharbi | Iran | 38.4258333 | 45.8055556 | 4327 | 8954 |
| Ordugah | city | Ostan-e Azarbayjan-e Gharbi | Iran | 39.5666667 | 48.0333333 | 232 | 8805 |
| Ordushahi | city | Ostan-e Azarbayjan-e Gharbi | Iran | 37.45 | 45.25 | 4209 | 5786 |
| Ordūgāh | city | Ostan-e Azarbayjan-e Gharbi | Iran | 39.5666667 | 48.0333333 | 232 | 8805 |
| Ordūshāhī | city | Ostan-e Azarbayjan-e Gharbi | Iran | 37.45 | 45.25 | 4209 | 5786 |
| Oriyan Tappeh | city | Ostan-e Azarbayjan-e Gharbi | Iran | 38.7016667 | 45.6641667 | 4967 | 8925 |
| Orta Kandi | city | Ostan-e Azarbayjan-e Gharbi | Iran | 39.1441667 | 45.3397222 | 2490 | 17597 |
| Ortā Kandī | city | Ostan-e Azarbayjan-e Gharbi | Iran | 39.1441667 | 45.3397222 | 2490 | 17597 |
| Oruf Kandi | city | Ostan-e Azarbayjan-e Gharbi | Iran | 39.4 | 48.1833333 | 580 | 8835 |
| Oruj Kand | city | Ostan-e Azarbayjan-e Gharbi | Iran | 39.2663889 | 45.0463889 | 2667 | 8404 |
| Oruj Kandi | city | Ostan-e Azarbayjan-e Gharbi | Iran | 39.2638889 | 44.225 | 6624 | 8499 |
| Oruj Mohamm'd Kandi | city | Ostan-e Azarbayjan-e Gharbi | Iran | 39.2663889 | 45.0463889 | 2667 | 8404 |
| Oruj Mohammad | city | Ostan-e Azarbayjan-e Gharbi | Iran | 39.2663889 | 45.0463889 | 2667 | 8404 |
| Oruj Muhammad-Kend | city | Ostan-e Azarbayjan-e Gharbi | Iran | 39.2663889 | 45.0463889 | 2667 | 8404 |
| Oruj-e Mohammad | city | Ostan-e Azarbayjan-e Gharbi | Iran | 39.2663889 | 45.0463889 | 2667 | 8404 |
| Oruj-e Mohammad Kandi | city | Ostan-e Azarbayjan-e Gharbi | Iran | 39.2663889 | 45.0463889 | 2667 | 8404 |
| Orujabad | city | Ostan-e Azarbayjan-e Gharbi | Iran | 39.0666667 | 48.2666667 | 2040 | 9094 |
| Orīyān Tappeh | city | Ostan-e Azarbayjan-e Gharbi | Iran | 38.7016667 | 45.6641667 | 4967 | 8925 |
| Orūf Kandī | city | Ostan-e Azarbayjan-e Gharbi | Iran | 39.4 | 48.1833333 | 580 | 8835 |
| Orūj Kand | city | Ostan-e Azarbayjan-e Gharbi | Iran | 39.2663889 | 45.0463889 | 2667 | 8404 |
| Orūj Kandī | city | Ostan-e Azarbayjan-e Gharbi | Iran | 39.2638889 | 44.225 | 6624 | 8499 |
| Orūj Mohammʼd Kandī | city | Ostan-e Azarbayjan-e Gharbi | Iran | 39.2663889 | 45.0463889 | 2667 | 8404 |
| Orūj Moḩammad | city | Ostan-e Azarbayjan-e Gharbi | Iran | 39.2663889 | 45.0463889 | 2667 | 8404 |
| Orūj-e Moḩammad | city | Ostan-e Azarbayjan-e Gharbi | Iran | 39.2663889 | 45.0463889 | 2667 | 8404 |
| Orūj-e Moḩammad Kandī | city | Ostan-e Azarbayjan-e Gharbi | Iran | 39.2663889 | 45.0463889 | 2667 | 8404 |
| Orūjābād | city | Ostan-e Azarbayjan-e Gharbi | Iran | 39.0666667 | 48.2666667 | 2040 | 9094 |
| Osgelu | city | Ostan-e Azarbayjan-e Gharbi | Iran | 38.8391667 | 46.9391667 | 6765 | 8902 |
| Osgelū | city | Ostan-e Azarbayjan-e Gharbi | Iran | 38.8391667 | 46.9391667 | 6765 | 8902 |
| Oshan | city | Ostan-e Azarbayjan-e Gharbi | Iran | 37.5033333 | 46.3041667 | 6161 | 9069 |
| Oshnurang | city | Ostan-e Azarbayjan-e Gharbi | Iran | 36.7638889 | 45.2388889 | 4717 | 8793 |
| Oshnuzeng | city | Ostan-e Azarbayjan-e Gharbi | Iran | 36.7638889 | 45.2388889 | 4717 | 8793 |
| Oshnūrang | city | Ostan-e Azarbayjan-e Gharbi | Iran | 36.7638889 | 45.2388889 | 4717 | 8793 |
| Oshti"n | city | Ostan-e Azarbayjan-e Gharbi | Iran | 38.8613889 | 46.4858333 | 3038 | 7363 |
| Oshtowbin | city | Ostan-e Azarbayjan-e Gharbi | Iran | 38.8613889 | 46.4858333 | 3038 | 7363 |
| Oshtowbīn | city | Ostan-e Azarbayjan-e Gharbi | Iran | 38.8613889 | 46.4858333 | 3038 | 7363 |
| Oshtubin | city | Ostan-e Azarbayjan-e Gharbi | Iran | 38.8613889 | 46.4858333 | 3038 | 7363 |
| Oshtī”n | city | Ostan-e Azarbayjan-e Gharbi | Iran | 38.8613889 | 46.4858333 | 3038 | 7363 |
| Oshtūbīn | city | Ostan-e Azarbayjan-e Gharbi | Iran | 38.8613889 | 46.4858333 | 3038 | 7363 |
| Oshān | city | Ostan-e Azarbayjan-e Gharbi | Iran | 37.5033333 | 46.3041667 | 6161 | 9069 |
| Oskelu | city | Ostan-e Azarbayjan-e Gharbi | Iran | 38.8391667 | 46.9391667 | 6765 | 8902 |
| Oskelū | city | Ostan-e Azarbayjan-e Gharbi | Iran | 38.8391667 | 46.9391667 | 6765 | 8902 |
| Osku | city | Ostan-e Azarbayjan-e Gharbi | Iran | 37.9108333 | 46.1408333 | 5183 | 9023 |
| Oskū | city | Ostan-e Azarbayjan-e Gharbi | Iran | 37.9108333 | 46.1408333 | 5183 | 9023 |
| Otol Goli | city | Ostan-e Azarbayjan-e Gharbi | Iran | 38.0166667 | 46.3666667 | 5688 | 9009 |
| Otol Golī | city | Ostan-e Azarbayjan-e Gharbi | Iran | 38.0166667 | 46.3666667 | 5688 | 9009 |
| Ow`ali | city | Ostan-e Azarbayjan-e Gharbi | Iran | 37.5 | 44.9333333 | 5295 | 8712 |
| Owrta Kand | city | Ostan-e Azarbayjan-e Gharbi | Iran | 39.1441667 | 45.3397222 | 2490 | 17597 |
| Owrtā Kand | city | Ostan-e Azarbayjan-e Gharbi | Iran | 39.1441667 | 45.3397222 | 2490 | 17597 |
| Ow‘alī | city | Ostan-e Azarbayjan-e Gharbi | Iran | 37.5 | 44.9333333 | 5295 | 8712 |
| Ozarlu | city | Ostan-e Azarbayjan-e Gharbi | Iran | 37.7 | 45.05 | 4360 | 8688 |
| Ozārlū | city | Ostan-e Azarbayjan-e Gharbi | Iran | 37.7 | 45.05 | 4360 | 8688 |