| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Saengurkonusteinn | city | Iceland | 63.50 | -19.35 | 147 | 0 | |
| Sandar | city | Iceland | 63.52 | -18.25 | 0 | 0 | |
| Sandasel | city | Iceland | 63.52 | -18.22 | 19 | 0 | |
| Seglbudhir | city | Iceland | 63.72 | -17.95 | 22 | 0 | |
| Seglbúðir | city | Iceland | 63.72 | -17.95 | 22 | 0 | |
| Skaftárdalur | city | Iceland | 63.80 | -18.48 | 521 | 0 | |
| Skagnes | city | Iceland | 63.45 | -19.13 | 45 | 0 | |
| Skal | city | Iceland | 63.75 | -18.28 | 501 | 0 | |
| Skalmarbaer | city | Iceland | 63.55 | -18.40 | 0 | 0 | |
| Skammidalur | city | Iceland | 63.45 | -19.10 | 36 | 1 | |
| Skeidhflotur | city | Iceland | 63.43 | -19.18 | 167 | 0 | |
| Skeidhiflotur | city | Iceland | 63.43 | -19.18 | 167 | 0 | |
| Skeiðflötur | city | Iceland | 63.43 | -19.18 | 167 | 0 | |
| Skeiðiflötur | city | Iceland | 63.43 | -19.18 | 167 | 0 | |
| Skeldhflotur | city | Iceland | 63.43 | -19.18 | 167 | 0 | |
| Skelðflötur | city | Iceland | 63.43 | -19.18 | 167 | 0 | |
| Skálmarbær | city | Iceland | 63.55 | -18.40 | 0 | 0 | |
| Snaebyli | city | Iceland | 63.73 | -18.62 | 518 | 0 | |
| Snæbýli | city | Iceland | 63.73 | -18.62 | 518 | 0 | |
| Solheimahjaleiga | city | Iceland | 63.48 | -19.33 | 88 | 0 | |
| Solheimar | city | Iceland | 63.48 | -19.33 | 88 | 0 | |
| Spinadalur | city | Iceland | 63.72 | -18.43 | 298 | 0 | |
| Steinsmýri | city | Iceland | 63.63 | -18.00 | 32 | 0 | |
| Storaheidhi | city | Iceland | 63.47 | -19.02 | 242 | 209 | |
| Strand | city | Iceland | 63.55 | -18.23 | 39 | 0 | |
| Strönd | city | Iceland | 63.55 | -18.23 | 39 | 0 | |
| Stóraheiði | city | Iceland | 63.47 | -19.02 | 242 | 209 | |
| Sudhur-Foss | city | Iceland | 63.43 | -19.07 | 252 | 184 | |
| Sula | city | Iceland | 63.85 | -17.88 | 88 | 0 | |
| Suður-Foss | city | Iceland | 63.43 | -19.07 | 252 | 184 | |
| Svínadalur | city | Iceland | 63.72 | -18.43 | 298 | 0 | |
| Sydhri-Steinsmyri | city | Iceland | 63.63 | -18.00 | 32 | 0 | |
| Sydhri-Steinsmyri | city | Iceland | 63.63 | -17.97 | 49 | 0 | |
| Sydhrifljotar | city | Iceland | 63.62 | -18.00 | 39 | 0 | |
| Sydhrivik | city | Iceland | 63.77 | -17.93 | 45 | 0 | |
| Syðri-Steinsmýri | city | Iceland | 63.63 | -18.00 | 32 | 0 | |
| Syðri-Steinsmýri | city | Iceland | 63.63 | -17.97 | 49 | 0 | |
| Syðrifljótar | city | Iceland | 63.62 | -18.00 | 39 | 0 | |
| Syðrivík | city | Iceland | 63.77 | -17.93 | 45 | 0 | |
| Sængurkonusteinn | city | Iceland | 63.50 | -19.35 | 147 | 0 |