| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Sahabandukokmaduwa | city | Southern | Sri Lanka | 6.02 | 80.45 | 252 | 98692 |
| Sakman Malowa | city | Southern | Sri Lanka | 6.24 | 81.36 | 16 | 6560 |
| Saliyapura | city | Southern | Sri Lanka | 6.24 | 81.24 | 65 | 11055 |
| Samodagama | city | Southern | Sri Lanka | 6.14 | 81.12 | 9 | 18282 |
| Sandy Colony | city | Southern | Sri Lanka | 6.20 | 80.30 | 830 | 39052 |
| Sangabowatta | city | Southern | Sri Lanka | 6.07 | 80.23 | 114 | 196313 |
| Sapugahayaya | city | Southern | Sri Lanka | 6.27 | 80.76 | 830 | 42913 |
| Sapugoda | city | Southern | Sri Lanka | 6.08 | 80.55 | 177 | 69904 |
| Sapugodawela | city | Southern | Sri Lanka | 6.07 | 80.68 | 830 | 71141 |
| Saputantirikanda | city | Southern | Sri Lanka | 6.23 | 80.63 | 1112 | 49434 |
| Saputatirikanda | city | Southern | Sri Lanka | 6.23 | 80.63 | 1112 | 49434 |
| Sedawatta | city | Southern | Sri Lanka | 6.27 | 81.23 | 55 | 10422 |
| Seenigama | city | Southern | Sri Lanka | 6.16 | 80.09 | 3 | 77629 |
| Seenimodera | city | Southern | Sri Lanka | 6.00 | 80.75 | 3 | 37641 |
| Senapura | city | Southern | Sri Lanka | 6.28 | 81.21 | 98 | 11019 |
| Shuddha Nagaraya | city | Southern | Sri Lanka | 6.28 | 81.30 | 19 | 9685 |
| Silvetgama | city | Southern | Sri Lanka | 7.78 | 80.60 | 830 | 30679 |
| Silwatgama | city | Southern | Sri Lanka | 7.78 | 80.60 | 830 | 30679 |
| Singhapura | city | Southern | Sri Lanka | 6.28 | 81.21 | 127 | 11280 |
| Sinharaja Aranyaya | city | Southern | Sri Lanka | 6.40 | 80.39 | 1112 | 19992 |
| Sinigama | city | Southern | Sri Lanka | 6.16 | 80.09 | 3 | 77629 |
| Sinimodara | city | Southern | Sri Lanka | 6.00 | 80.75 | 3 | 37641 |
| Sinimodera | city | Southern | Sri Lanka | 6.00 | 80.75 | 3 | 37641 |
| Sinimunna | city | Southern | Sri Lanka | 6.34 | 81.22 | 160 | 9258 |
| Siripagama | city | Southern | Sri Lanka | 6.24 | 81.28 | 16 | 10156 |
| Siriyagama | city | Southern | Sri Lanka | 6.21 | 81.28 | 9 | 7266 |
| Sitinamaluwa | city | Southern | Sri Lanka | 6.05 | 80.75 | 193 | 57455 |
| Sittakala | city | Southern | Sri Lanka | 6.12 | 81.07 | 3 | 15934 |
| Sittarawila | city | Southern | Sri Lanka | 6.29 | 81.29 | 45 | 9685 |
| Sittrakala | city | Southern | Sri Lanka | 6.12 | 81.07 | 3 | 15934 |
| Siwelgama | city | Southern | Sri Lanka | 6.05 | 80.55 | 95 | 77519 |
| Siyambalabeddewa | city | Southern | Sri Lanka | 6.19 | 80.77 | 337 | 42624 |
| Siyambalagasgoda | city | Southern | Sri Lanka | 6.07 | 80.77 | 167 | 55282 |
| Siyambalagaswela | city | Southern | Sri Lanka | 6.17 | 81.03 | 29 | 25602 |
| Siyambalagaswewa | city | Southern | Sri Lanka | 6.18 | 80.87 | 173 | 33895 |
| Siyambalagaswila | city | Southern | Sri Lanka | 6.17 | 81.03 | 29 | 25602 |
| Siyambalagoda | city | Southern | Sri Lanka | 6.07 | 80.77 | 167 | 55282 |
| Siyambalagoda | city | Southern | Sri Lanka | 6.23 | 80.93 | 91 | 35819 |
| Siyambalagoda | city | Southern | Sri Lanka | 6.23 | 80.91 | 131 | 35248 |
| Siyambalagoda East | city | Southern | Sri Lanka | 6.21 | 80.54 | 830 | 48374 |
| Siyambalagoda West | city | Southern | Sri Lanka | 6.22 | 80.50 | 830 | 46624 |
| Siyambalahaddawa | city | Southern | Sri Lanka | 6.19 | 80.77 | 337 | 42624 |
| Siyambalakatuwa | city | Southern | Sri Lanka | 6.21 | 80.92 | 137 | 36261 |
| Siyambalakote | city | Southern | Sri Lanka | 6.23 | 80.91 | 131 | 35248 |
| Siyambalamure | city | Southern | Sri Lanka | 6.28 | 80.70 | 416 | 44720 |
| Siyarapitiya | city | Southern | Sri Lanka | 6.28 | 80.69 | 387 | 44309 |
| Sooriyagama | city | Southern | Sri Lanka | 6.39 | 80.04 | 26 | 77500 |
| Sooriyagoda | city | Southern | Sri Lanka | 6.42 | 80.00 | 3 | 62020 |
| Sramdanagama | city | Southern | Sri Lanka | 6.13 | 80.50 | 298 | 51547 |
| Suddagoda | city | Southern | Sri Lanka | 6.43 | 80.01 | 3 | 80382 |
| Suddallewa | city | Southern | Sri Lanka | 6.35 | 80.26 | 830 | 36490 |
| Suddegoda | city | Southern | Sri Lanka | 6.43 | 80.01 | 3 | 80382 |
| Suduwelipatha | city | Southern | Sri Lanka | 6.20 | 80.23 | 830 | 53373 |
| Suduwelipota | city | Southern | Sri Lanka | 6.15 | 80.12 | 68 | 108812 |
| Suduwetiya | city | Southern | Sri Lanka | 6.12 | 80.12 | 3 | 82023 |
| Sultanagoda | city | Southern | Sri Lanka | 5.97 | 80.50 | 55 | 108607 |
| Sulutanagoda | city | Southern | Sri Lanka | 5.97 | 80.50 | 55 | 108607 |
| Sumihirigama | city | Southern | Sri Lanka | 6.13 | 80.66 | 830 | 57949 |
| Sundaranayaga | city | Southern | Sri Lanka | 5.98 | 80.48 | 13 | 101697 |
| Suneethagama | city | Southern | Sri Lanka | 6.16 | 80.75 | 311 | 45810 |
| Surigoda | city | Southern | Sri Lanka | 6.42 | 80.00 | 3 | 62020 |
| Suriyapokuna | city | Southern | Sri Lanka | 6.22 | 80.85 | 337 | 33915 |
| Suriyawewa | city | Southern | Sri Lanka | 6.32 | 81.00 | 232 | 24782 |