| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Onar | city | Ostan-e Ardabil | Iran | 38.4861111 | 47.8427778 | 4776 | 8950 |
| Onasirabad | city | Ostan-e Tehran | Iran | 35.3305556 | 51.5736111 | 2887 | 48122 |
| Onaşīrābād | city | Ostan-e Tehran | Iran | 35.3305556 | 51.5736111 | 2887 | 48122 |
| Ondariyeh | city | Ostan-e Tehran | Iran | 35.7855556 | 52.4552778 | 6883 | 47849 |
| Ondarīyeh | city | Ostan-e Tehran | Iran | 35.7855556 | 52.4552778 | 6883 | 47849 |
| Ondelan | city | Ostan-e Esfahan | Iran | 32.5286111 | 51.9361111 | 5016 | 4761 |
| Ondelān | city | Ostan-e Esfahan | Iran | 32.5286111 | 51.9361111 | 5016 | 4761 |
| Oniseh | city | | Iran | 36.0138889 | 52.6672222 | 9301 | 11263 |
| Onsorood | city | Ostan-e Azarbayjan-e Gharbi | Iran | 37.8194444 | 46.2986111 | 7290 | 9031 |
| Onār | city | Ostan-e Ardabil | Iran | 38.4861111 | 47.8427778 | 4776 | 8950 |
| Onīseh | city | | Iran | 36.0138889 | 52.6672222 | 9301 | 11263 |
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