| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
| Suagolu | city | Eastern Province | Sierra Leone | 8.3333333 | -10.5833333 | 951 | 6953 |
| Suako | city | Southern Province | Sierra Leone | 7.1836111 | -11.6486111 | 187 | 4373 |
| Subu | city | Southern Province | Sierra Leone | 7.2886111 | -12.1427778 | 3 | 1943 |
| Suen | city | Southern Province | Sierra Leone | 8.15 | -12.9166667 | 19 | 2550 |
| Sufidu | city | Eastern Province | Sierra Leone | 8.85 | -11.2 | 1469 | 26642 |
| Sufidu | city | Eastern Province | Sierra Leone | 8.6333333 | -10.5666667 | 961 | 24291 |
| Sugbale | city | Southern Province | Sierra Leone | 7.4227778 | -11.9369444 | 183 | 3942 |
| Sugeta | city | Northern Province | Sierra Leone | 9.6333333 | -12.1333333 | 429 | 4812 |
| Suinkonkoma | city | Eastern Province | Sierra Leone | 8.9666667 | -11.0333333 | 1391 | 26632 |
| Suinya | city | Northern Province | Sierra Leone | 9.05 | -12.1166667 | 495 | 5174 |
| Sukebu | city | Eastern Province | Sierra Leone | 8.25 | -10.6333333 | 997 | 7418 |
| Sukudu | city | Eastern Province | Sierra Leone | 8.5666667 | -11.2833333 | 1013 | 26499 |
| Sukudu | city | Eastern Province | Sierra Leone | 8.75 | -11.0333333 | 1220 | 26664 |
| Sukudu | city | Eastern Province | Sierra Leone | 8.7666667 | -10.95 | 1341 | 26660 |
| Sukudu | city | Eastern Province | Sierra Leone | 8.55 | -10.8833333 | 1689 | 26674 |
| Sukudu | city | Eastern Province | Sierra Leone | 8.5 | -10.6833333 | 1007 | 21944 |
| Sukuma Town | city | Western Area | Sierra Leone | 8.2897222 | -13.075 | 108 | 7571 |
| Sulehun | city | Southern Province | Sierra Leone | 7.7833333 | -11.7 | 318 | 5527 |
| Sulima | city | Southern Province | Sierra Leone | 7.9666667 | -12.85 | 45 | 3473 |
| Sulima | city | Southern Province | Sierra Leone | 6.9691667 | -11.5752778 | 0 | 2469 |
| Sulima | city | Southern Province | Sierra Leone | 7.8 | -11.45 | 485 | 6843 |
| Sulima | city | Eastern Province | Sierra Leone | 8.9 | -10.8833333 | 1341 | 25966 |
| Sulimania | city | Northern Province | Sierra Leone | 9.6333333 | -11.5333333 | 1496 | 2380 |
| Sulpon | city | Western Area | Sierra Leone | 8.3744444 | -13.2372222 | 147 | 13852 |
| Sumana | city | Eastern Province | Sierra Leone | 8.9666667 | -10.6333333 | 2007 | 20768 |
| Sumanferikia | city | Northern Province | Sierra Leone | 9.8833333 | -11.2833333 | 1496 | 2380 |
| Sumata | city | Northern Province | Sierra Leone | 9.6833333 | -12.2666667 | 498 | 5166 |
| Sumaworia | city | Northern Province | Sierra Leone | 9.0833333 | -10.8166667 | 1604 | 2384 |
| Sumbadu | city | Eastern Province | Sierra Leone | 8.3333333 | -10.3666667 | 1489 | 6697 |
| Sumbaia | city | Northern Province | Sierra Leone | 8.9833333 | -12.4833333 | 242 | 7250 |
| Sumbaidu | city | Eastern Province | Sierra Leone | 8.6166667 | -11.2166667 | 1404 | 26671 |
| Sumbaidu | city | Eastern Province | Sierra Leone | 8.6833333 | -11.1333333 | 1076 | 26667 |
| Sumbaidu | city | Eastern Province | Sierra Leone | 8.4666667 | -10.9166667 | 997 | 26650 |
| Sumbaria | city | Northern Province | Sierra Leone | 8.8333333 | -11.3333333 | 1053 | 19745 |
| Sumbaru | city | Eastern Province | Sierra Leone | 8.4166667 | -11.2666667 | 941 | 20505 |
| Sumbaru | city | Eastern Province | Sierra Leone | 8.1833333 | -11.0666667 | 767 | 7687 |
| Sumbedu | city | Eastern Province | Sierra Leone | 8.65 | -10.5333333 | 1010 | 19596 |
| Sumbidu | city | Eastern Province | Sierra Leone | 8.55 | -10.7666667 | 1578 | 26674 |
| Sumbidu | city | Eastern Province | Sierra Leone | 8.7666667 | -10.6166667 | 1299 | 25002 |
| Sumbuya | city | Northern Province | Sierra Leone | 8.5758333 | -13.1638889 | 95 | 5683 |
| Sumbuya | city | Northern Province | Sierra Leone | 8.4338889 | -13.0566667 | 104 | 8696 |
| Sumbuya | city | Northern Province | Sierra Leone | 9.2333333 | -12.8333333 | 226 | 8799 |
| Sumbuya | city | Northern Province | Sierra Leone | 8.4 | -12.6 | 114 | 5084 |
| Sumbuya | city | Northern Province | Sierra Leone | 9.3166667 | -12.35 | 213 | 5257 |
| Sumbuya | city | Southern Province | Sierra Leone | 7.6466667 | -11.9611111 | 85 | 5479 |
| Sumbuya | city | Southern Province | Sierra Leone | 8.05 | -11.8 | 344 | 5516 |
| Sumbuya | city | Southern Province | Sierra Leone | 7.185 | -11.6719444 | 187 | 4373 |
| Sumoya | city | Eastern Province | Sierra Leone | 8.9 | -10.9833333 | 1499 | 26650 |
| Sundodu | city | Northern Province | Sierra Leone | 9.0666667 | -10.8166667 | 2040 | 2384 |
| Sundu | city | Southern Province | Sierra Leone | 7.3833333 | -11.8166667 | 223 | 4373 |
| Sundukuni | city | Northern Province | Sierra Leone | 9.4666667 | -11.6 | 1459 | 2380 |
| Sundulukoro | city | Northern Province | Sierra Leone | 8.9833333 | -11.5166667 | 1499 | 4698 |
| Sunga | city | Southern Province | Sierra Leone | 7.85 | -11.8333333 | 164 | 5521 |
| Sungaru | city | Southern Province | Sierra Leone | 8.2666667 | -11.5 | 997 | 6200 |
| Sungaru | city | Eastern Province | Sierra Leone | 8.3166667 | -11.3666667 | 830 | 7686 |
| Sungiema | city | Eastern Province | Sierra Leone | 8.2333333 | -10.6166667 | 997 | 7425 |
| Sunkoni | city | Northern Province | Sierra Leone | 9.0333333 | -11.7 | 1502 | 5451 |
| Sunya | city | Southern Province | Sierra Leone | 8.15 | -12.9166667 | 19 | 2550 |
| Suri | city | Northern Province | Sierra Leone | 9.7166667 | -12.25 | 495 | 5166 |
| Suria | city | Northern Province | Sierra Leone | 8.9872222 | -12.9994444 | 29 | 8849 |
| Suria | city | Northern Province | Sierra Leone | 9.3 | -10.85 | 1496 | 2380 |
| Suribulomia | city | Northern Province | Sierra Leone | 9.05 | -13.2166667 | 131 | 6622 |
| Suriburaia | city | Northern Province | Sierra Leone | 9.2 | -12.8833333 | 72 | 8792 |
| Surie | city | Northern Province | Sierra Leone | 8.9872222 | -12.9994444 | 29 | 8849 |
| Surikamara | city | Southern Province | Sierra Leone | 8.3166667 | -12.6666667 | 134 | 4415 |
| Sussex | city | Western Area | Sierra Leone | 8.3466667 | -13.23 | 0 | 13852 |
| Susu Town | city | Western Area | Sierra Leone | 8.3744444 | -13.0836111 | 78 | 9011 |
| Susudara | city | Northern Province | Sierra Leone | 9.4666667 | -12.5666667 | 229 | 8817 |
| Susuwalia | city | Northern Province | Sierra Leone | 9.6333333 | -10.95 | 1564 | 1948 |
| Susuworo | city | Southern Province | Sierra Leone | 8.1358333 | -12.5516667 | 236 | 4424 |
| Susuworo | city | Southern Province | Sierra Leone | 8.2833333 | -12.4666667 | 164 | 4415 |
| Suwadu | city | Eastern Province | Sierra Leone | 8.2277778 | -10.3741667 | 1197 | 6564 |
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