| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
| Sa Not | city | Khoueng Houaphan | Laos | 20.6666667 | 104.1333333 | 3221 | 3696 |
| Sai Koun | city | Khoueng Houaphan | Laos | 20.1380556 | 104.4727778 | 1719 | 2334 |
| Sala de Pa Hang | city | Khoueng Houaphan | Laos | 20.7241667 | 104.4858333 | 4274 | 5237 |
| Sam Kouy | city | Khoueng Houaphan | Laos | 20.15 | 104.2333333 | 3782 | 2507 |
| Sam Neua | city | Khoueng Houaphan | Laos | 19.9666667 | 104.6833333 | 1479 | 1821 |
| Sam Tao | city | Khoueng Houaphan | Laos | 19.99 | 104.6319444 | 1089 | 1822 |
| Sam Teu | city | Khoueng Houaphan | Laos | 19.99 | 104.6319444 | 1089 | 1822 |
| Same Din | city | Khoueng Houaphan | Laos | 20.5833333 | 104.1 | 4258 | 2918 |
| Samkhong | city | Khoueng Houaphan | Laos | 19.9222222 | 104.2897222 | 4251 | 1824 |
| Sammeua | city | Khoueng Houaphan | Laos | 20.4197222 | 104.0438889 | 3172 | 2749 |
| Samnua | city | Khoueng Houaphan | Laos | 20.4197222 | 104.0438889 | 3172 | 2749 |
| San Nua | city | Khoueng Houaphan | Laos | 19.9666667 | 104.6833333 | 1479 | 1821 |
| Sap Pit | city | Khoueng Houaphan | Laos | 20.7669444 | 104.2283333 | 830 | 3696 |
| Sen Kao | city | Khoueng Houaphan | Laos | 20.1 | 103.8 | 2627 | 2212 |
| Sen Khoun | city | Khoueng Houaphan | Laos | 20.3833333 | 104.2 | 2801 | 2735 |
| Sen Louang | city | Khoueng Houaphan | Laos | 20.275 | 104.2855556 | 4097 | 2394 |
| Sen Nam | city | Khoueng Houaphan | Laos | 20.3833333 | 104.1833333 | 3123 | 2735 |
| Sen Pom | city | Khoueng Houaphan | Laos | 20.0833333 | 103.7833333 | 2463 | 2195 |
| So Khouan | city | Khoueng Houaphan | Laos | 20.5833333 | 103.6833333 | 2847 | 910 |
| So Not | city | Khoueng Houaphan | Laos | 20.6666667 | 104.1333333 | 3221 | 3696 |
| Som Poy | city | Khoueng Houaphan | Laos | 20.3302778 | 104.3886111 | 2175 | 2366 |
| Song Kao | city | Khoueng Houaphan | Laos | 20.0888889 | 104.0991667 | 3684 | 2687 |
| Songkoan | city | Khoueng Houaphan | Laos | 20.5833333 | 103.6833333 | 2847 | 910 |
| Sop Hao | city | Khoueng Houaphan | Laos | 20.5622222 | 104.4461111 | 1253 | 3866 |
| Sop Kang | city | Khoueng Houaphan | Laos | 19.7088889 | 104.2513889 | 1046 | 2248 |
| Sop Long | city | Khoueng Houaphan | Laos | 20.7336111 | 104.3408333 | 875 | 3718 |
| Sop Phua | city | Khoueng Houaphan | Laos | 20.1333333 | 104.85 | 1381 | 2243 |
| Sop Pit | city | Khoueng Houaphan | Laos | 20.7669444 | 104.2283333 | 830 | 3696 |
| Sop Sai | city | Khoueng Houaphan | Laos | 20.3036111 | 104.2463889 | 3385 | 2544 |
| Sop Sai | city | Khoueng Houaphan | Laos | 20.7519444 | 104.3186111 | 1371 | 3704 |
| Sop San | city | Khoueng Houaphan | Laos | 20.8488889 | 104.0838889 | 898 | 3694 |
| Sop Tieng | city | Khoueng Houaphan | Laos | 20.0594444 | 104.1866667 | 3156 | 2111 |
| Sop Vete | city | Khoueng Houaphan | Laos | 20.6833333 | 103.9166667 | 1646 | 3689 |
| Sop Vète | city | Khoueng Houaphan | Laos | 20.6833333 | 103.9166667 | 1646 | 3689 |
| Sop Y | city | Khoueng Houaphan | Laos | 20.6 | 103.8833333 | 2053 | 3168 |
| Sopka | city | Khoueng Houaphan | Laos | 20.4822222 | 103.6747222 | 2188 | 910 |
| Sopmon | city | Khoueng Houaphan | Laos | 20.7777778 | 104.165 | 1069 | 3696 |
| Sopxai | city | Khoueng Houaphan | Laos | 20.7519444 | 104.3186111 | 1371 | 3704 |
| Sung Kao | city | Khoueng Houaphan | Laos | 20.0888889 | 104.0991667 | 3684 | 2687 |
| Suoi Lap | city | Khoueng Houaphan | Laos | 20.75 | 104.4 | 1489 | 3862 |
| Sèn Khoun | city | Khoueng Houaphan | Laos | 20.3833333 | 104.2 | 2801 | 2735 |
| Sèn Louang | city | Khoueng Houaphan | Laos | 20.275 | 104.2855556 | 4097 | 2394 |
| Sèn Nam | city | Khoueng Houaphan | Laos | 20.3833333 | 104.1833333 | 3123 | 2735 |
| Sôngkoan | city | Khoueng Houaphan | Laos | 20.5833333 | 103.6833333 | 2847 | 910 |
| Sôp Long | city | Khoueng Houaphan | Laos | 20.7336111 | 104.3408333 | 875 | 3718 |
| Sôpka | city | Khoueng Houaphan | Laos | 20.4822222 | 103.6747222 | 2188 | 910 |
| Sôpmon | city | Khoueng Houaphan | Laos | 20.7777778 | 104.165 | 1069 | 3696 |
| Sôpxai | city | Khoueng Houaphan | Laos | 20.7519444 | 104.3186111 | 1371 | 3704 |
|
|