| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Oantu | city | Neamt | Romania | 46.92 | 26.18 | 1669 | 5101 |
| Oantul | city | Neamt | Romania | 46.92 | 26.18 | 1669 | 5101 |
| Ocea | city | Neamt | Romania | 47.17 | 26.37 | 1174 | 24736 |
| Oglinzi | city | Neamt | Romania | 47.25 | 26.35 | 1131 | 14050 |
| Oniceni | city | Neamt | Romania | 46.82 | 27.15 | 830 | 6330 |
| Orţăşti | city | Neamt | Romania | 47.32 | 26.38 | 944 | 7632 |
| Oslobeni | city | Neamt | Romania | 47.05 | 26.38 | 1669 | 6181 |