| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Ookatku | city | Jogevamaa | Estonia | 58.8508333 | 26.6186111 | 337 | 1260 |
| Oola | city | Raplamaa | Estonia | 59.0483333 | 24.8822222 | 242 | 1047 |
| Oomiste | city | Tartumaa | Estonia | 58.2008333 | 26.5247222 | 374 | 3524 |
| Oomkula | city | Laanemaa | Estonia | 58.8513889 | 24.0191667 | 85 | 1069 |
| Oomküla | city | Laanemaa | Estonia | 58.8513889 | 24.0191667 | 85 | 1069 |
| Oonga | city | Laanemaa | Estonia | 58.8225 | 23.7291667 | 19 | 880 |
| Oonurme | city | Ida-Virumaa | Estonia | 59.1136111 | 26.9216667 | 200 | 4521 |
| Oore | city | Parnumaa | Estonia | 58.4644444 | 24.7675 | 62 | 1527 |
| Oore | city | Raplamaa | Estonia | 58.8683333 | 24.91 | 226 | 1051 |
| Oore | city | Raplamaa | Estonia | 58.8833333 | 24.9166667 | 219 | 1050 |
| Oorekula | city | Parnumaa | Estonia | 58.4644444 | 24.7675 | 62 | 1527 |
| Ooreküla | city | Parnumaa | Estonia | 58.4644444 | 24.7675 | 62 | 1527 |
| Oorema | city | Saaremaa | Estonia | 58.3883333 | 22.2838889 | 121 | 1097 |
| Ooremaa | city | Saaremaa | Estonia | 58.3883333 | 22.2838889 | 121 | 1097 |
| Oorgu | city | Viljandimaa | Estonia | 58.5180556 | 25.8558333 | 209 | 1601 |
| Ooriku | city | Saaremaa | Estonia | 58.5777778 | 22.93 | 29 | 1026 |
| Ootla | city | Jarvamaa | Estonia | 58.9419444 | 25.7491667 | 269 | 1306 |
| Ootla Asundus | city | Jarvamaa | Estonia | 58.9419444 | 25.7491667 | 269 | 1306 |
| Oovere | city | Saaremaa | Estonia | 58.4155556 | 22.9766667 | 45 | 836 |
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