| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Oessaare | city | Saaremaa | Estonia | 58.33 | 22.88 | 22 | 469 |
| Oessang | city | Hwangnam | Korea, Dem. Peoples Rep. of (North) | 38.48 | 125.65 | 6 | 32955 |
| Oessanggok | city | Chungbuk | Korea, Republic of (South) | 36.78 | 127.89 | 830 | 12218 |
| Oesselghem | city | Vlaanderen | Belgium | 50.94 | 3.43 | 29 | 32383 |
| Oesselse | city | Niedersachsen | Germany | 52.28 | 9.88 | 269 | 63506 |
| Oessilo | city | Oecussi-Ambeno | East Timor | -9.37 | 124.35 | 1669 | 8766 |
| Oessoeriejsk | city | Primorskiy Kray | Russia | 43.80 | 131.95 | 104 | 4917 |