UpAlphabetical listing of Places in Iran
| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
| Ooch Tappeh | city | Markazi | Iran | 34.06 | 49.17 | 7001 | 2086 |
| Oojaksar | city | Mazandaran | Iran | 36.65 | 51.60 | -1689 | 5690 |
| Oojoonak | city | Tehran | Iran | 35.57 | 52.24 | 5935 | 2086 |
| Oom Tappeh | city | Azarbayjan-e Sharqi | Iran | 38.22 | 46.01 | 4304 | 45705 |
| Oomal | city | Mazandaran | Iran | 36.71 | 53.09 | -1689 | 19948 |
| Oonan | city | Kerman | Iran | 28.54 | 56.79 | 6912 | 1341 |
| Ooraman Takht | city | Kordestan | Iran | 35.25 | 46.26 | 3753 | 3076 |
| Oorghīn | city | Hamadan | Iran | 35.28 | 48.69 | 5869 | 5364 |
| Oorneh | city | Qazvin | Iran | 35.95 | 49.26 | 6709 | 2235 |
| Oorteh Ghomish | city | Hamadan | Iran | 35.57 | 48.63 | 7618 | 4570 |
| Ooz Kala | city | Mazandaran | Iran | 36.17 | 51.63 | 9228 | 2831 |
| Oozan | city | Azarbayjan-e Sharqi | Iran | 38.98 | 46.67 | 1669 | 3346 |
| Oozondareh | city | Hamadan | Iran | 35.54 | 48.35 | 5869 | 5215 |
| Oozoon Darreh Sofla | city | Azarbayjan-e Gharbi | Iran | 36.72 | 45.77 | 5029 | 28988 |
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