Alphabetical listing of Places in Houaphan
| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
| Sa Not | city | Houaphan | Laos | 20.67 | 104.13 | 3349 | 2533 |
| Sai Koun | city | Houaphan | Laos | 20.14 | 104.47 | 1719 | 2192 |
| Sala de Pa Hang | city | Houaphan | Laos | 20.72 | 104.49 | 4274 | 4133 |
| Sam Kouy | city | Houaphan | Laos | 20.15 | 104.23 | 4189 | 957 |
| Sam Neua | city | Houaphan | Laos | 19.97 | 104.68 | 1669 | 1788 |
| Sam Tao | city | Houaphan | Laos | 19.99 | 104.63 | 1089 | 1789 |
| Sam Teu | city | Houaphan | Laos | 19.99 | 104.63 | 1089 | 1789 |
| Same Din | city | Houaphan | Laos | 20.58 | 104.10 | 4258 | 1052 |
| Samkhong | city | Houaphan | Laos | 19.92 | 104.29 | 4251 | 1788 |
| Sammeua | city | Houaphan | Laos | 20.42 | 104.05 | 3349 | 44467 |
| Samnua | city | Houaphan | Laos | 20.42 | 104.05 | 3349 | 44467 |
| San Nua | city | Houaphan | Laos | 19.97 | 104.68 | 1669 | 1788 |
| Sap Pit | city | Houaphan | Laos | 20.77 | 104.23 | 830 | 6349 |
| Sen Kao | city | Houaphan | Laos | 20.10 | 103.81 | 3349 | 2086 |
| Sen Pom | city | Houaphan | Laos | 20.10 | 103.79 | 2509 | 2086 |
| So Khouan | city | Houaphan | Laos | 20.59 | 103.69 | 3700 | 894 |
| So Not | city | Houaphan | Laos | 20.67 | 104.13 | 3349 | 2533 |
| Som Poy | city | Houaphan | Laos | 20.33 | 104.39 | 2509 | 2235 |
| Song Kao | city | Houaphan | Laos | 20.09 | 104.10 | 3684 | 566 |
| Songkoan | city | Houaphan | Laos | 20.59 | 103.69 | 3700 | 894 |
| Sop Cop | city | Houaphan | Laos | 20.20 | 103.22 | 3457 | 1091 |
| Sop Hao | city | Houaphan | Laos | 20.56 | 104.45 | 1253 | 2549 |
| Sop Kang | city | Houaphan | Laos | 19.71 | 104.25 | 1046 | 2628 |
| Sop Long | city | Houaphan | Laos | 20.73 | 104.34 | 875 | 6512 |
| Sop Nath | city | Houaphan | Laos | 20.03 | 103.72 | 1916 | 2025 |
| Sop Phua | city | Houaphan | Laos | 20.13 | 104.84 | 1669 | 2073 |
| Sop Pit | city | Houaphan | Laos | 20.77 | 104.23 | 830 | 6349 |
| Sop Sai | city | Houaphan | Laos | 20.30 | 104.24 | 3415 | 1760 |
| Sop Sai | city | Houaphan | Laos | 20.75 | 104.32 | 1669 | 14432 |
| Sop San | city | Houaphan | Laos | 20.85 | 104.08 | 898 | 2533 |
| Sop Tieng | city | Houaphan | Laos | 20.06 | 104.19 | 3349 | 1390 |
| Sop Vete | city | Houaphan | Laos | 20.68 | 103.92 | 1669 | 2533 |
| Sop Y | city | Houaphan | Laos | 20.60 | 103.88 | 2053 | 1241 |
| Sopnat | city | Houaphan | Laos | 20.03 | 103.72 | 1916 | 2025 |
| Sopxai | city | Houaphan | Laos | 20.75 | 104.32 | 1669 | 14432 |
| Sung Kao | city | Houaphan | Laos | 20.09 | 104.10 | 3684 | 566 |
| Suoi Lap | city | Houaphan | Laos | 20.75 | 104.40 | 1669 | 3345 |
| Sèn Khoun | city | Houaphan | Laos | 20.38 | 104.20 | 2801 | 657 |
| Sèn Louang | city | Houaphan | Laos | 20.27 | 104.29 | 4189 | 2235 |
| Sèn Nam | city | Houaphan | Laos | 20.38 | 104.18 | 3349 | 448 |
| Sôpka | city | Houaphan | Laos | 20.48 | 103.67 | 2509 | 894 |
| Sôpmon | city | Houaphan | Laos | 20.78 | 104.17 | 1069 | 2533 |
| Sầm Nưa | city | Houaphan | Laos | 20.42 | 104.05 | 3349 | 44467 |
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