| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
| So Khouan | city | Khoueng Houaphan | Laos | 20.5833333 | 103.6833333 | 2847 | 910 |
| So Ko | city | | Laos | 20.6166667 | 101.3833333 | 2040 | 1722 |
| So Ko Noi | city | | Laos | 20.7166667 | 101.5333333 | 2247 | 1701 |
| So Not | city | Khoueng Houaphan | Laos | 20.6666667 | 104.1333333 | 3221 | 3696 |
| Soc Ouan | city | | Laos | 16.5166667 | 104.9833333 | 583 | 17068 |
| Soc Quan | city | | Laos | 16.5166667 | 104.9833333 | 583 | 17068 |
| Soei Giao | city | | Laos | 16.4 | 106.7166667 | 2306 | 3143 |
| Som Phu | city | Khoueng Phongsali | Laos | 21.0177778 | 102.7161111 | 1751 | 1555 |
| Som Poy | city | Khoueng Houaphan | Laos | 20.3302778 | 104.3886111 | 2175 | 2366 |
| Son Keo | city | Khoueng Xiangkhoang | Laos | 18.9333333 | 103.2166667 | 3553 | 1034 |
| Son Lin Chai | city | Khoueng Phongsali | Laos | 22.0961111 | 102.0111111 | 3428 | 1161 |
| Song Ha | city | Khoueng Louangphrabang | Laos | 20.033333 | 102.2305556 | 1118 | 2439 |
| Song Kao | city | Khoueng Houaphan | Laos | 20.0888889 | 104.0991667 | 3684 | 2687 |
| Song Khone | city | Khoueng Savannakhet | Laos | 16.2666667 | 105.3 | 406 | 7201 |
| Song Niang | city | Khoueng Phongsali | Laos | 21.0619444 | 102.3255556 | 2959 | 2626 |
| Songkeo | city | Khoueng Xiangkhoang | Laos | 18.9333333 | 103.2166667 | 3553 | 1034 |
| Songkoan | city | Khoueng Houaphan | Laos | 20.5833333 | 103.6833333 | 2847 | 910 |
| Songkèo | city | Khoueng Xiangkhoang | Laos | 18.9333333 | 103.2166667 | 3553 | 1034 |
| Sop At | city | Khoueng Phongsali | Laos | 21.0708333 | 102.5730556 | 1719 | 2550 |
| Sop Cop | city | | Laos | 20.2 | 103.2166667 | 3457 | 1047 |
| Sop Hao | city | Khoueng Houaphan | Laos | 20.5622222 | 104.4461111 | 1253 | 3866 |
| Sop Kai | city | Khoueng Phongsali | Laos | 21.0463889 | 102.4388889 | 1453 | 2651 |
| Sop Kang | city | Khoueng Houaphan | Laos | 19.7088889 | 104.2513889 | 1046 | 2248 |
| Sop Keng | city | Khoueng Louangphrabang | Laos | 20.6525 | 102.6597222 | 1125 | 2512 |
| Sop Khan Nua | city | | Laos | 20.6666667 | 102.6666667 | 1377 | 2197 |
| Sop Kine | city | Khoueng Louangphrabang | Laos | 20.8597222 | 102.7163889 | 1817 | 2855 |
| Sop Koi | city | Khoueng Phongsali | Laos | 21.0463889 | 102.4388889 | 1453 | 2651 |
| Sop Kong | city | Khoueng Louangphrabang | Laos | 20.6525 | 102.6597222 | 1125 | 2512 |
| Sop Lang | city | Khoueng Phongsali | Laos | 21.1794444 | 102.4819444 | 1453 | 2646 |
| Sop Leng | city | Khoueng Phongsali | Laos | 21.1794444 | 102.4819444 | 1453 | 2646 |
| Sop Long | city | Khoueng Houaphan | Laos | 20.7336111 | 104.3408333 | 875 | 3718 |
| Sop Nath | city | Khoueng Xiangkhoang | Laos | 20.0333333 | 103.7166667 | 1916 | 2156 |
| Sop Ngin | city | | Laos | 20.65 | 101.4333333 | 1738 | 1722 |
| Sop Nham | city | | Laos | 21.5333333 | 102.7833333 | 1994 | 1209 |
| Sop Nhom | city | | Laos | 21.5333333 | 102.7833333 | 1994 | 1209 |
| Sop Phua | city | Khoueng Houaphan | Laos | 20.1333333 | 104.85 | 1381 | 2243 |
| Sop Ping | city | Khoueng Phongsali | Laos | 22.0713889 | 102.0452778 | 2303 | 1231 |
| Sop Pit | city | Khoueng Houaphan | Laos | 20.7669444 | 104.2283333 | 830 | 3696 |
| Sop Pong | city | Khoueng Phongsali | Laos | 22.0713889 | 102.0452778 | 2303 | 1231 |
| Sop Sai | city | Khoueng Phongsali | Laos | 21.1933333 | 102.4711111 | 1906 | 2646 |
| 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 Sang | city | Khoueng Louangphrabang | Laos | 20.6041667 | 102.9944444 | 1715 | 1610 |
| Sop Sap | city | | Laos | 20.15 | 103.0833333 | 1922 | 1419 |
| Sop Sei | city | Khoueng Phongsali | Laos | 21.1933333 | 102.4711111 | 1906 | 2646 |
| Sop Sum | city | | Laos | 22.0333333 | 101.8833333 | 2372 | 1154 |
| Sop Ten | city | Khoueng Xiangkhoang | Laos | 19.6727778 | 104.0230556 | 1486 | 2578 |
| Sop Tialeng | city | | Laos | 20.5333333 | 101.45 | 1935 | 1722 |
| Sop Tiek | city | | Laos | 20.2 | 102.3333333 | 1207 | 2002 |
| Sop Tieng | city | Khoueng Houaphan | Laos | 20.0594444 | 104.1866667 | 3156 | 2111 |
| Sop Tioc | city | Khoueng Louangphrabang | Laos | 20.3275 | 102.7644444 | 1945 | 2092 |
| Sop Van | city | Khoueng Louangphrabang | Laos | 20.6086111 | 102.6483333 | 1430 | 2173 |
| 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 |
| Sop Yang | city | | Laos | 20.4333333 | 102.9 | 2532 | 1435 |
| Sopchok | city | Khoueng Louangphrabang | Laos | 20.3275 | 102.7644444 | 1945 | 2092 |
| Sopka | city | Khoueng Houaphan | Laos | 20.4822222 | 103.6747222 | 2188 | 910 |
| Sopkhao | city | Khoueng Xiangkhoang | Laos | 19.8866667 | 103.2313889 | 1945 | 946 |
| Soplan | city | Khoueng Xiangkhoang | Laos | 19.7 | 104.05 | 1138 | 2742 |
| Sopmon | city | Khoueng Houaphan | Laos | 20.7777778 | 104.165 | 1069 | 3696 |
| Sopnao | city | Khoueng Phongsali | Laos | 21.1611111 | 102.7636111 | 1400 | 1218 |
| Sopnat | city | Khoueng Xiangkhoang | Laos | 20.0333333 | 103.7166667 | 1916 | 2156 |
| Soppone | city | Khoueng Khammouan | Laos | 18.3197222 | 104.7316667 | 1489 | 1246 |
| Sopsoum | city | | Laos | 22.0333333 | 101.8833333 | 2372 | 1154 |
| Soptouk | city | | Laos | 18.8166667 | 104.5 | 2316 | 677 |
| Sopvi | city | Khoueng Louangphrabang | Laos | 19.9497222 | 102.5402778 | 1443 | 1148 |
| Sopxai | city | Khoueng Houaphan | Laos | 20.7519444 | 104.3186111 | 1371 | 3704 |
| Sopxang | city | Khoueng Louangphrabang | Laos | 20.6041667 | 102.9944444 | 1715 | 1610 |
| Sou Lin Cha | city | Khoueng Phongsali | Laos | 22.0538889 | 101.6919444 | 3011 | 1168 |
| Sou Lin Chai | city | Khoueng Phongsali | Laos | 22.0538889 | 101.6919444 | 3011 | 1168 |
| Sou Lin Chai | city | Khoueng Phongsali | Laos | 22.0961111 | 102.0111111 | 3428 | 1161 |
| Sou Lin Chay | city | Khoueng Phongsali | Laos | 22.0538889 | 101.6919444 | 3011 | 1168 |
| Sou Lin Che | city | | Laos | 22.2833333 | 102.1 | 3080 | 1148 |
| Sou Lin Cho | city | | Laos | 22.2833333 | 102.1 | 3080 | 1148 |
| Soukkouma | city | Khoueng Champasak | Laos | 14.6333333 | 105.8 | 308 | 5809 |
| Soum Phai | city | | Laos | 19.15 | 102.4333333 | 1217 | 1503 |
| Souvanna Khili | city | Khoueng Champasak | Laos | 15.3833333 | 105.8166667 | 370 | 8109 |
| Souvanna Khill | city | Khoueng Champasak | Laos | 15.3833333 | 105.8166667 | 370 | 8109 |
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