| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Sandar | city | Iceland | 65.35 | -20.97 | 29 | 15 | |
| Sandur | city | Iceland | 65.35 | -20.97 | 29 | 15 | |
| Saudhadalsa | city | Iceland | 65.53 | -20.97 | 95 | 0 | |
| Saurar | city | Iceland | 65.33 | -20.90 | 147 | 79 | |
| Saurbaer | city | Iceland | 65.65 | -20.73 | 531 | 0 | |
| Saurbær | city | Iceland | 65.65 | -20.73 | 531 | 0 | |
| Sauðadalsá | city | Iceland | 65.53 | -20.97 | 95 | 0 | |
| Selás | city | Iceland | 65.38 | -20.68 | 354 | 0 | |
| Sidha | city | Iceland | 65.42 | -20.65 | 101 | 0 | |
| Sigridharstadhir | city | Iceland | 65.53 | -20.62 | 200 | 0 | |
| Sigríðarstaðir | city | Iceland | 65.53 | -20.62 | 200 | 0 | |
| Skarastadhir | city | Iceland | 65.17 | -20.68 | 721 | 0 | |
| Skardh | city | Iceland | 65.50 | -20.98 | 541 | 0 | |
| Skardhsholl | city | Iceland | 65.28 | -20.90 | 177 | 0 | |
| Skarð | city | Iceland | 65.50 | -20.98 | 541 | 0 | |
| Skarðshóll | city | Iceland | 65.28 | -20.90 | 177 | 0 | |
| Skeggjastadhir | city | Iceland | 65.17 | -20.90 | 498 | 0 | |
| Skeggjastaðir | city | Iceland | 65.17 | -20.90 | 498 | 0 | |
| Skárastaðir | city | Iceland | 65.17 | -20.68 | 721 | 0 | |
| Spordhshus | city | Iceland | 65.35 | -20.72 | 475 | 0 | |
| Spordhur | city | Iceland | 65.38 | -20.70 | 252 | 0 | |
| Sporðshús | city | Iceland | 65.35 | -20.72 | 475 | 0 | |
| Sporður | city | Iceland | 65.38 | -20.70 | 252 | 0 | |
| Stadharbakki | city | Iceland | 65.30 | -20.87 | 88 | 0 | |
| Stadhur | city | Iceland | 65.15 | -21.05 | 459 | 0 | |
| Stapa | city | Iceland | 65.60 | -20.90 | 104 | 0 | |
| Stapar | city | Iceland | 65.60 | -20.90 | 104 | 0 | |
| Staðarbakki | city | Iceland | 65.30 | -20.87 | 88 | 0 | |
| Staður | city | Iceland | 65.15 | -21.05 | 459 | 0 | |
| Stora-Hlidh | city | Iceland | 65.25 | -20.52 | 1000 | 0 | |
| Stóra Borg | city | Iceland | 65.50 | -20.58 | 127 | 0 | |
| Stóra-Hlíð | city | Iceland | 65.25 | -20.52 | 1000 | 0 | |
| Stóra-Hvarf | city | Iceland | 65.22 | -20.63 | 977 | 0 | |
| Stórhóll | city | Iceland | 65.37 | -20.70 | 416 | 0 | |
| Stóri-Ós | city | Iceland | 65.35 | -20.90 | 229 | 277 | |
| Svardhbaeli | city | Iceland | 65.32 | -20.95 | 187 | 0 | |
| Svarðbæli | city | Iceland | 65.32 | -20.95 | 187 | 0 | |
| Svedhjustadhir | city | Iceland | 65.28 | -21.00 | 324 | 0 | |
| Sveðjustaðir | city | Iceland | 65.28 | -21.00 | 324 | 0 | |
| Sydhri Hvammur | city | Iceland | 65.40 | -20.93 | 190 | 580 | |
| Sydhri-Karastadhir | city | Iceland | 65.45 | -20.97 | 475 | 91 | |
| Sydhri-Thvera | city | Iceland | 65.50 | -20.70 | 118 | 0 | |
| Sydhri-Valdaas | city | Iceland | 65.32 | -20.65 | 551 | 0 | |
| Sydhri-Vellir | city | Iceland | 65.38 | -20.92 | 334 | 585 | |
| Syðri Hvammur | city | Iceland | 65.40 | -20.93 | 190 | 580 | |
| Syðri-Karastaðir | city | Iceland | 65.45 | -20.97 | 475 | 91 | |
| Syðri-Valdaás | city | Iceland | 65.32 | -20.65 | 551 | 0 | |
| Syðri-Vellir | city | Iceland | 65.38 | -20.92 | 334 | 585 | |
| Syðri-Þverá | city | Iceland | 65.50 | -20.70 | 118 | 0 | |
| Síða | city | Iceland | 65.42 | -20.65 | 101 | 0 | |
| Súluvellir | city | Iceland | 65.62 | -20.65 | 68 | 0 |