| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Oddstadhir | city | Iceland | 64.55 | -21.33 | 652 | 0 | |
| Oddstaðir | city | Iceland | 64.55 | -21.33 | 652 | 0 | |
| Oliustodh | city | Iceland | 64.40 | -21.46 | 0 | 0 | |
| Olíustöð | city | Iceland | 64.40 | -21.46 | 0 | 0 | |
| Oraghals | city | Iceland | 64.48 | -21.50 | 521 | 32 | |
| Os | city | Iceland | 64.35 | -22.00 | 75 | 3447 |