| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Оганди | city | Hiiumaa | Estonia | 59.02 | 22.56 | 16 | 214 |
| Оле | city | Hiiumaa | Estonia | 58.76 | 22.50 | 19 | 354 |
| Орьяку | city | Hiiumaa | Estonia | 58.79 | 22.77 | 19 | 311 |
| Островъ Каэватсъ | city | Hiiumaa | Estonia | 58.82 | 23.07 | 3 | 72 |
| Островъ Сарнакъ | city | Hiiumaa | Estonia | 58.81 | 22.99 | 0 | 74 |
| Отсте | city | Hiiumaa | Estonia | 58.96 | 22.52 | 26 | 281 |
| Оякюла | city | Hiiumaa | Estonia | 58.90 | 22.19 | 65 | 154 |