| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Оара | city | Parnumaa | Estonia | 58.46 | 24.32 | 26 | 722 |
| Ойдрема | city | Parnumaa | Estonia | 58.60 | 23.94 | 62 | 247 |
| Ойссааре | city | Parnumaa | Estonia | 58.25 | 25.05 | 190 | 298 |
| Ооре | city | Parnumaa | Estonia | 58.46 | 24.77 | 62 | 602 |
| Орайыэ | city | Parnumaa | Estonia | 57.95 | 24.40 | 55 | 336 |
| Орикюла | city | Parnumaa | Estonia | 58.65 | 25.19 | 147 | 447 |
| Оэзе | city | Parnumaa | Estonia | 58.65 | 24.51 | 78 | 596 |