| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Sandlaekur | city | Iceland | 64.03 | -20.42 | 177 | 2 | |
| Sandlækur | city | Iceland | 64.03 | -20.42 | 177 | 2 | |
| Sandvík | city | Iceland | 63.92 | -21.07 | 52 | 1823 | |
| Saurbaer | city | Iceland | 63.98 | -21.20 | 36 | 2197 | |
| Saurbaer | city | Iceland | 63.85 | -20.80 | 22 | 204 | |
| Saurbær | city | Iceland | 63.98 | -21.20 | 36 | 2197 | |
| Saurbær | city | Iceland | 63.85 | -20.80 | 22 | 204 | |
| Sel | city | Iceland | 63.85 | -21.08 | 13 | 1496 | |
| Sel | city | Iceland | 64.13 | -20.58 | 180 | 63 | |
| Selfoss | city | Iceland | 63.93 | -21.02 | 55 | 3000 | |
| Selfoss | city | Iceland | 63.93 | -21.00 | 52 | 2897 | |
| Selkot | city | Iceland | 64.25 | -21.28 | 879 | 0 | |
| Selpartur | city | Iceland | 63.80 | -20.73 | 0 | 0 | |
| Sjonarholl | city | Iceland | 63.83 | -21.05 | 0 | 1247 | |
| Skalabrekka | city | Iceland | 64.23 | -21.20 | 351 | 0 | |
| Skaldabudhir | city | Iceland | 64.12 | -20.20 | 748 | 0 | |
| Skaptholt | city | Iceland | 64.05 | -20.20 | 351 | 0 | |
| Skapþolt | city | Iceland | 64.05 | -20.20 | 351 | 0 | |
| Skardh | city | Iceland | 64.05 | -20.35 | 406 | 30 | |
| Skarð | city | Iceland | 64.05 | -20.35 | 406 | 30 | |
| Skeidhhaholt | city | Iceland | 63.97 | -20.55 | 147 | 64 | |
| Skeiðháholt | city | Iceland | 63.97 | -20.55 | 147 | 64 | |
| Skipholt | city | Iceland | 64.20 | -20.28 | 321 | 24 | |
| Skogsnes | city | Iceland | 63.83 | -20.78 | 26 | 58 | |
| Skollagróf | city | Iceland | 64.18 | -20.30 | 305 | 103 | |
| Skrautás | city | Iceland | 64.13 | -20.27 | 393 | 128 | |
| Skridhufell | city | Iceland | 64.12 | -19.97 | 570 | 0 | |
| Skriðufell | city | Iceland | 64.12 | -19.97 | 570 | 0 | |
| Skufslaekur | city | Iceland | 63.85 | -20.77 | 36 | 125 | |
| Skáldabúðir | city | Iceland | 64.12 | -20.20 | 748 | 0 | |
| Skálholt | city | Iceland | 64.12 | -20.53 | 170 | 132 | |
| Skálmholt | city | Iceland | 63.95 | -20.65 | 157 | 96 | |
| Skúfslækur | city | Iceland | 63.85 | -20.77 | 36 | 125 | |
| Snaefoksstadhir | city | Iceland | 64.02 | -20.90 | 124 | 0 | |
| Snorrastadhir | city | Iceland | 64.23 | -20.70 | 219 | 88 | |
| Snorrastaðir | city | Iceland | 64.23 | -20.70 | 219 | 88 | |
| Snæfoksstaðir | city | Iceland | 64.02 | -20.90 | 124 | 0 | |
| Snóksnes | city | Iceland | 63.83 | -20.78 | 26 | 58 | |
| Snússa | city | Iceland | 64.10 | -20.40 | 223 | 166 | |
| Sogn | city | Iceland | 64.00 | -21.15 | 213 | 1508 | |
| Solheimar | city | Iceland | 64.07 | -20.65 | 262 | 61 | |
| Solheimar | city | Iceland | 64.12 | -20.27 | 380 | 124 | |
| Solvi | city | Iceland | 63.93 | -20.95 | 72 | 1460 | |
| Spoastadhir | city | Iceland | 64.13 | -20.55 | 255 | 112 | |
| Spvastadhir | city | Iceland | 64.13 | -20.55 | 255 | 112 | |
| Spvastaðir | city | Iceland | 64.13 | -20.55 | 255 | 112 | |
| Spóastaðir | city | Iceland | 64.13 | -20.55 | 255 | 112 | |
| Staerribaer | city | Iceland | 64.08 | -20.70 | 318 | 50 | |
| Stakkavík | city | Iceland | 63.87 | -21.75 | 9 | 0 | |
| Steinsholt | city | Iceland | 64.07 | -20.22 | 321 | 0 | |
| Stekkar | city | Iceland | 63.90 | -21.08 | 36 | 2037 | |
| Stekkatun | city | Iceland | 64.20 | -20.77 | 331 | 48 | |
| Stekkholt | city | Iceland | 64.25 | -20.43 | 311 | 20 | |
| Stokkseyrarsel | city | Iceland | 63.87 | -21.07 | 29 | 2050 | |
| Stokkseyre | city | Iceland | 63.83 | -21.07 | 0 | 1406 | |
| Stokkseyri | city | Iceland | 63.83 | -21.07 | 0 | 1406 | |
| Stora Armot | city | Iceland | 63.98 | -20.93 | 62 | 181 | |
| Storafljot | city | Iceland | 64.18 | -20.45 | 265 | 156 | |
| Storinupur | city | Iceland | 64.05 | -20.17 | 370 | 0 | |
| Storu-Mastungur | city | Iceland | 64.08 | -20.18 | 482 | 0 | |
| Strandakirkja | city | Iceland | 63.83 | -21.70 | 19 | 0 | |
| Strandarkirkja | city | Iceland | 63.83 | -21.70 | 19 | 0 | |
| Stærribær | city | Iceland | 64.08 | -20.70 | 318 | 50 | |
| Stíflisdalur | city | Iceland | 64.25 | -21.33 | 577 | 0 | |
| Stóra-Sandvík | city | Iceland | 63.92 | -21.07 | 52 | 1823 | |
| Stóraborg | city | Iceland | 64.07 | -20.77 | 288 | 0 | |
| Stórahof | city | Iceland | 64.03 | -20.32 | 255 | 0 | |
| Stórureykir | city | Iceland | 63.97 | -20.80 | 118 | 7 | |
| Svartagil | city | Iceland | 64.30 | -21.12 | 521 | 42 | |
| Sveinavam | city | Iceland | 64.10 | -20.70 | 298 | 42 | |
| Sveinavatn | city | Iceland | 64.10 | -20.70 | 298 | 42 | |
| Svidhugardhar | city | Iceland | 63.87 | -20.87 | 39 | 108 | |
| Sviðugarðar | city | Iceland | 63.87 | -20.87 | 39 | 108 | |
| Svínavatn | city | Iceland | 64.10 | -20.70 | 298 | 42 | |
| Sydhra-Langholt | city | Iceland | 64.08 | -20.45 | 262 | 125 | |
| Sydhra-Sel | city | Iceland | 63.85 | -21.08 | 13 | 1496 | |
| Sydhri Vollur | city | Iceland | 63.83 | -20.87 | 42 | 110 | |
| Sydhri-Brunavellir | city | Iceland | 64.02 | -20.55 | 173 | 0 | |
| Sydhri-Gegnisholar | city | Iceland | 63.85 | -20.92 | 19 | 0 | |
| Sydhri-Reykir | city | Iceland | 64.22 | -20.53 | 269 | 116 | |
| Sydhri-Syrlaekur | city | Iceland | 63.82 | -20.75 | 3 | 0 | |
| Syrlaekur | city | Iceland | 63.82 | -20.73 | 3 | 0 | |
| Syðra-Langholt | city | Iceland | 64.08 | -20.45 | 262 | 125 | |
| Syðra-Sel | city | Iceland | 63.85 | -21.08 | 13 | 1496 | |
| Syðri Völlur | city | Iceland | 63.83 | -20.87 | 42 | 110 | |
| Syðri-Brúnavellir | city | Iceland | 64.02 | -20.55 | 173 | 0 | |
| Syðri-Gegnishólar | city | Iceland | 63.85 | -20.92 | 19 | 0 | |
| Syðri-Reykir | city | Iceland | 64.22 | -20.53 | 269 | 116 | |
| Syðri-Sýrlækur | city | Iceland | 63.82 | -20.75 | 3 | 0 | |
| Sóleyjarbakki | city | Iceland | 64.07 | -20.40 | 180 | 84 | |
| Súluholt | city | Iceland | 63.88 | -20.88 | 49 | 81 | |
| Sýrlækur | city | Iceland | 63.82 | -20.73 | 3 | 0 | |
| Sýruker | city | Iceland | 64.20 | -20.33 | 311 | 62 |