| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Oddstadhir | city | Iceland | 65.18 | -21.05 | 495 | 0 | |
| Oddstaðir | city | Iceland | 65.18 | -21.05 | 495 | 0 | |
| Os | city | Iceland | 65.35 | -20.90 | 229 | 277 | |
| Ospaksstadhasel | city | Iceland | 65.07 | -21.05 | 649 | 0 | |
| Oxnartunga | city | Iceland | 65.27 | -20.52 | 987 | 0 |