| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Oapatlu | city | Zanjan | Iran | 36.40 | 48.57 | 6709 | 3423 |
| Obar | city | Zanjan | Iran | 36.92 | 48.97 | 2509 | 2086 |
| Oghlībeyk | city | Zanjan | Iran | 36.50 | 47.94 | 5869 | 2086 |
| Oghol Beyg-e Pa'in | city | Zanjan | Iran | 36.43 | 48.47 | 6709 | 2678 |
| Oghol Beyg-e Pā’īn | city | Zanjan | Iran | 36.43 | 48.47 | 6709 | 2678 |
| Ogholbeyg | city | Zanjan | Iran | 36.43 | 48.47 | 6709 | 2678 |
| Ogholbeyg-e Bala | city | Zanjan | Iran | 36.48 | 48.47 | 6768 | 2190 |
| Ogholbeyk | city | Zanjan | Iran | 36.50 | 47.94 | 5869 | 2086 |
| Ogholbeyk-e- `Olya | city | Zanjan | Iran | 36.48 | 48.47 | 6768 | 2190 |
| Ogholbeyk-e- ‘Olyā | city | Zanjan | Iran | 36.48 | 48.47 | 6768 | 2190 |
| Oghor | city | Zanjan | Iran | 35.88 | 49.05 | 5869 | 2111 |
| Oghul Beyg-e Bala | city | Zanjan | Iran | 36.48 | 48.47 | 6768 | 2190 |
| Oghulbeyn | city | Zanjan | Iran | 36.48 | 48.47 | 6768 | 2190 |
| Oglan | city | Zanjan | Iran | 36.95 | 47.86 | 5065 | 2086 |
| Olkash | city | Zanjan | Iran | 37.15 | 48.78 | 6709 | 2127 |
| Olībeyg | city | Zanjan | Iran | 35.94 | 48.15 | 5108 | 3427 |
| Ommabad | city | Zanjan | Iran | 37.22 | 48.23 | 5029 | 2464 |
| Orchi | city | Zanjan | Iran | 36.99 | 48.28 | 5869 | 2086 |
| Ordak Bolāghī | city | Zanjan | Iran | 36.39 | 48.64 | 7040 | 3103 |
| Organjeh | city | Zanjan | Iran | 35.81 | 48.72 | 6709 | 2376 |
| Orumlu | city | Zanjan | Iran | 37.16 | 48.35 | 5127 | 2272 |
| Orāchī | city | Zanjan | Iran | 36.99 | 48.28 | 5869 | 2086 |
| Orūmī | city | Zanjan | Iran | 37.16 | 48.35 | 5127 | 2272 |
| Owch Bolagh | city | Zanjan | Iran | 37.01 | 48.24 | 6036 | 2086 |
| Owch Bolagh | city | Zanjan | Iran | 36.15 | 48.34 | 7549 | 3427 |
| Owch Tappeh | city | Zanjan | Iran | 36.52 | 48.30 | 6709 | 2086 |
| Owchţāsh | city | Zanjan | Iran | 36.43 | 47.69 | 6709 | 1790 |
| Owghli Beyg-e `Olya | city | Zanjan | Iran | 36.48 | 48.47 | 6768 | 2190 |
| Owghlī Beyg-e Soflá | city | Zanjan | Iran | 36.43 | 48.47 | 6709 | 2678 |
| Owghlī Beyg-e ‘Olyā | city | Zanjan | Iran | 36.48 | 48.47 | 6768 | 2190 |
| Owghol Beyg-e Bala | city | Zanjan | Iran | 36.48 | 48.47 | 6768 | 2190 |
| Owghol Beyg-e Pa'in | city | Zanjan | Iran | 36.43 | 48.47 | 6709 | 2678 |
| Owghol Beyg-e Pā’īn | city | Zanjan | Iran | 36.43 | 48.47 | 6709 | 2678 |
| Owjālū Mūsá | city | Zanjan | Iran | 36.81 | 47.63 | 4189 | 2086 |
| Owlang | city | Zanjan | Iran | 36.41 | 48.73 | 6000 | 2196 |
| Owlen Delbar | city | Zanjan | Iran | 36.77 | 48.72 | 9228 | 2086 |
| Owli Beyg | city | Zanjan | Iran | 35.94 | 48.15 | 5108 | 3427 |
| Owlī Beyk | city | Zanjan | Iran | 35.94 | 48.15 | 5108 | 3427 |
| Owrganjeh | city | Zanjan | Iran | 35.81 | 48.72 | 6709 | 2376 |
| Owrjak | city | Zanjan | Iran | 36.94 | 47.44 | 5029 | 2086 |
| Owrtah Bolagh | city | Zanjan | Iran | 36.96 | 48.38 | 6709 | 2086 |
| Owrteh Bolāgh | city | Zanjan | Iran | 36.96 | 48.38 | 6709 | 2086 |
| Owrtā Bolāgh | city | Zanjan | Iran | 36.96 | 48.38 | 6709 | 2086 |
| Owrāchī | city | Zanjan | Iran | 36.99 | 48.28 | 5869 | 2086 |
| Owshtanian | city | Zanjan | Iran | 36.11 | 48.31 | 5869 | 3427 |
| Owzaj | city | Zanjan | Iran | 36.80 | 47.90 | 6709 | 2086 |
| Owzun Dagh Dali | city | Zanjan | Iran | 36.18 | 49.42 | 5869 | 2086 |
| Ozan | city | Zanjan | Iran | 36.50 | 48.22 | 5869 | 2086 |