| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Сабо | city | Sakhalinskaya Oblast' | Russia | 53.15 | 142.94 | 229 | 0 |
| Садовники | city | Sakhalinskaya Oblast' | Russia | 47.20 | 142.05 | 26 | 1094 |
| Сакидзава | city | Sakhalinskaya Oblast' | Russia | 47.33 | 142.95 | 3 | 285 |
| Сарычево | city | Sakhalinskaya Oblast' | Russia | 48.06 | 153.25 | 321 | 60 |
| Севергино | city | Sakhalinskaya Oblast' | Russia | 49.16 | 154.50 | 830 | 53 |
| Северная Широкая Падь | city | Sakhalinskaya Oblast' | Russia | 51.20 | 142.23 | 55 | 99 |
| Северные Катангли | city | Sakhalinskaya Oblast' | Russia | 51.75 | 143.18 | 82 | 149 |
| Северный Боатасын | city | Sakhalinskaya Oblast' | Russia | 52.45 | 143.07 | 216 | 149 |
| Северо-Курильск | city | Sakhalinskaya Oblast' | Russia | 50.68 | 156.13 | 108 | 84 |
| Северо-Невельск | city | Sakhalinskaya Oblast' | Russia | 46.68 | 141.87 | 830 | 6087 |
| Селезнёво | city | Sakhalinskaya Oblast' | Russia | 46.61 | 141.84 | 75 | 1535 |
| Сеногорье | city | Sakhalinskaya Oblast' | Russia | 48.87 | 141.98 | 121 | 318 |
| Сентябрьский | city | Sakhalinskaya Oblast' | Russia | 49.41 | 142.24 | 239 | 447 |
| Сергеевка | city | Sakhalinskaya Oblast' | Russia | 49.22 | 142.09 | 16 | 334 |
| Сергеево | city | Sakhalinskaya Oblast' | Russia | 47.57 | 141.97 | 347 | 149 |
| Симаково | city | Sakhalinskaya Oblast' | Russia | 47.12 | 142.06 | 173 | 5398 |
| Синегорск | city | Sakhalinskaya Oblast' | Russia | 47.17 | 142.52 | 830 | 2769 |
| Сираива | city | Sakhalinskaya Oblast' | Russia | 46.13 | 143.40 | 0 | 128 |
| Слава | city | Sakhalinskaya Oblast' | Russia | 51.04 | 142.63 | 295 | 298 |
| Славы | city | Sakhalinskaya Oblast' | Russia | 51.04 | 142.63 | 295 | 298 |
| Славянка | city | Sakhalinskaya Oblast' | Russia | 50.38 | 142.38 | 1151 | 149 |
| Сладкое Озеро | city | Sakhalinskaya Oblast' | Russia | 53.42 | 141.95 | 3 | 0 |
| Слюдянская | city | Sakhalinskaya Oblast' | Russia | 47.35 | 142.00 | 6 | 193 |
| Смирных | city | Sakhalinskaya Oblast' | Russia | 49.75 | 142.84 | 269 | 149 |
| Соболево | city | Sakhalinskaya Oblast' | Russia | 48.99 | 142.01 | 383 | 254 |
| Соболи | city | Sakhalinskaya Oblast' | Russia | 51.03 | 142.72 | 393 | 298 |
| Советское | city | Sakhalinskaya Oblast' | Russia | 47.49 | 142.66 | 19 | 605 |
| Совхоз Пограничного Отряда | city | Sakhalinskaya Oblast' | Russia | 50.78 | 142.40 | 830 | 280 |
| Совхозное | city | Sakhalinskaya Oblast' | Russia | 47.17 | 142.18 | 403 | 298 |
| Соенкотан | city | Sakhalinskaya Oblast' | Russia | 48.02 | 142.54 | 3 | 268 |
| Сокол | city | Sakhalinskaya Oblast' | Russia | 47.24 | 142.75 | 82 | 745 |
| Сокольники | city | Sakhalinskaya Oblast' | Russia | 46.78 | 141.94 | 278 | 248 |
| Соловьёвка | city | Sakhalinskaya Oblast' | Russia | 46.72 | 142.75 | 78 | 1310 |
| Сопочная | city | Sakhalinskaya Oblast' | Russia | 46.43 | 143.33 | 278 | 139 |
| Сплавное | city | Sakhalinskaya Oblast' | Russia | 47.10 | 142.33 | 1184 | 298 |
| Старитский | city | Sakhalinskaya Oblast' | Russia | 46.23 | 141.27 | 0 | 0 |
| Старица | city | Sakhalinskaya Oblast' | Russia | 48.64 | 141.90 | 29 | 248 |
| Старицкий | city | Sakhalinskaya Oblast' | Russia | 46.23 | 141.27 | 0 | 0 |
| Старицький | city | Sakhalinskaya Oblast' | Russia | 46.23 | 141.27 | 0 | 0 |
| Староайнское | city | Sakhalinskaya Oblast' | Russia | 48.45 | 142.06 | 19 | 183 |
| Стародубское | city | Sakhalinskaya Oblast' | Russia | 47.41 | 142.82 | 72 | 414 |
| Старомаячное | city | Sakhalinskaya Oblast' | Russia | 47.85 | 142.08 | 0 | 90 |
| Старорусское | city | Sakhalinskaya Oblast' | Russia | 47.17 | 142.74 | 104 | 8510 |
| Старый Набиль | city | Sakhalinskaya Oblast' | Russia | 51.52 | 143.40 | 0 | 81 |
| Стахановское | city | Sakhalinskaya Oblast' | Russia | 48.97 | 142.75 | 830 | 345 |