| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Sidhmuli | city | Vesturland | Iceland | 64.71 | -21.34 | 131 | 68 |
| Sidhumulaveggir | city | Vesturland | Iceland | 64.70 | -21.43 | 114 | 0 |
| Sidhumulaveggjin | city | Vesturland | Iceland | 64.70 | -21.43 | 114 | 0 |
| Sidhumuli | city | Vesturland | Iceland | 64.71 | -21.34 | 131 | 68 |
| Siggusel | city | Vesturland | Iceland | 64.50 | -22.13 | 49 | 0 |
| Sigmundarstadhir | city | Vesturland | Iceland | 64.78 | -21.36 | 193 | 0 |
| Sigmundarstaðir | city | Vesturland | Iceland | 64.78 | -21.36 | 193 | 0 |
| Signyjarstadhir | city | Vesturland | Iceland | 64.70 | -21.21 | 232 | 0 |
| Signýjarstaðir | city | Vesturland | Iceland | 64.70 | -21.21 | 232 | 0 |
| Siðmúli | city | Vesturland | Iceland | 64.71 | -21.34 | 131 | 68 |
| Siðumulaveggjin | city | Vesturland | Iceland | 64.70 | -21.43 | 114 | 0 |