| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Ulfljotsvatn | city | Iceland | 64.10 | -21.05 | 318 | 0 | |
| Unnarholt | city | Iceland | 64.10 | -20.45 | 219 | 172 | |
| Urridhafoss | city | Iceland | 63.92 | -20.68 | 0 | 0 | |
| Urriðafoss | city | Iceland | 63.92 | -20.68 | 0 | 0 | |
| Utey | city | Iceland | 64.20 | -20.70 | 219 | 84 | |
| Uthlidh | city | Iceland | 64.27 | -20.47 | 324 | 2 |