| Name | Country | Feature class | Latitude | Longitude | |
|---|---|---|---|---|---|
3301  | Siyambalagaswewa Siyabalagaswewa,Siyambalagaswewa | Sri Lanka, North Western Province Kurunegala District > Maho > Gala Ambagaswewa | populated place | N 7° 46′ 0'' | E 80° 20′ 0'' |
| 3302 | Siyambalagaswetiya Siyambalagaswetiya,Siyambalagaswitiya | Sri Lanka, North Western Province Kurunegala District > Kobeigane > Amunukole | populated place | N 7° 41′ 0'' | E 80° 7′ 0'' |
| 3303 | Siyambalagaswila Siyambalagaswela,Siyambalagaswila | Sri Lanka, Southern Province Hambantota District > Hambantota Division > Siyambalagasvila South | populated place | N 6° 10′ 5'' | E 81° 1′ 45'' |
| 3304 | Siyambalaella Siyambalaella,Siyambalella | Sri Lanka, North Western Province Kurunegala District > Ridigama Division > Delvita | populated place | N 7° 30′ 4'' | E 80° 32′ 49'' |
| 3305 | Siwalakulama Sivalakulama,Siwalakulama | Sri Lanka, North Central Province Anuradhapura District > Galenbidunuwewa > Sivalakulama | populated place | N 8° 15′ 0'' | E 80° 38′ 0'' |
| 3306 | Sivaralumulla Sivaralumulla,Sivuralumulla | Sri Lanka, Western Province Gampaha District > Gampaha Division > Nedungamuwa | populated place | N 7° 2′ 54'' | E 80° 1′ 38'' |
| 3307 | Sittakala Sittakala,Sittrakala | Sri Lanka, Southern Province Hambantota District > Hambantota Division > Sisilasagama | populated place | N 6° 7′ 12'' | E 81° 4′ 17'' |
| 3308 | Seethagalapanguwa Seethagalapanguwa,Sitagalapanguwa | Sri Lanka, Sabaragamuwa Province Ratnapura District > Balangoda Division > Welekumbura | populated place | N 6° 42′ 32'' | E 80° 38′ 11'' |
| 3309 | Sirvilankuli Siruvilankuli,Sirvilankuli | Sri Lanka, Northern Province Mannar District > Manthai West Division > Pappamoddai | populated place | N 8° 59′ 0'' | E 80° 1′ 0'' |
| 3310 | Siruvilan Chiruvilan,Siruvilan | Sri Lanka, Northern Province Jaffna District > Valikamam South West Division > Mullanai | populated place | N 9° 47′ 6'' | E 79° 59′ 58'' |
| 3311 | Sirukkulama Sirukkulama,Sirukulama | Sri Lanka, North Central Province Anuradhapura District > Nuwaragam Palata Central Division > Thannayamkulama | populated place | N 8° 22′ 0'' | E 80° 27′ 0'' |
| 3312 | Sirangoda Serangoda,Sirangoda | Sri Lanka, North Western Province Kurunegala District > Ganewatta Division > Seerangoda | populated place | N 7° 41′ 0'' | E 80° 19′ 0'' |
| 3313 | Siradunne Siradunna,Siradunne | Sri Lanka, North Western Province Kurunegala District > Ganewatta Division > Seeradunna1 | populated place | N 7° 35′ 37'' | E 80° 24′ 31'' |
| 3314 | Sinnavilupattiya Sinnavilupattiya,Sinnawilupattiya | Sri Lanka, North Central Province Polonnaruwa District > Lankapura > Onagama - Muslimgala | populated place | N 8° 0′ 0'' | E 81° 6′ 0'' |
| 3315 | Sinnaththanpanai Sinnaththampanai,Sinnaththanpanai | Sri Lanka, Northern Province Vavuniya District > Venkalacheddikulam Division > Periyapuliyalankulam | populated place | N 8° 38′ 48'' | E 80° 22′ 44'' |
| 3316 | Sinna Ottapanai Ottapanai Sinna,Sinna Ottapanai | Sri Lanka, North Western Province Puttalam District > Mundel Division > Poonapitiya | populated place | N 7° 48′ 44'' | E 79° 47′ 7'' |
| 3317 | Sinnakulama Sinnakulam,Sinnakulama | Sri Lanka, Northern Province Vavuniya District > Vavuniya South Division > Alagalla | populated place | N 8° 40′ 19'' | E 80° 30′ 22'' |
| 3318 | Sinna Kattakaduwa Kattakadu Sinna,Sinna Kattakaduwa | Sri Lanka, North Western Province Puttalam District > Mahakumbukkadawala Division > Dangaswewa2 | populated place | N 7° 52′ 57'' | E 79° 54′ 38'' |
| 3319 | Sinnasembukuliya Sinna Chembukuliya,Sinnasembukuliya | Sri Lanka, North Western Province Puttalam District > Mundel Division > Karathanvilluwa | populated place | N 7° 47′ 37'' | E 79° 49′ 44'' |
| 3320 | Sinna Aiyamperumal Sinna Aiyamperumal,Sinna Alyamperumal | Sri Lanka, Northern Province Mullaitivu District > Manthai East > Palinagar | populated place | N 9° 7′ 0'' | E 80° 20′ 0'' |
| 3321 | Singhaya Ulpota Singhaya Ulpota,Sinhaya Ulpota | Sri Lanka, North Central Province Anuradhapura District > Kebitigollewa Division > Herathhalmillewa | populated place | N 8° 44′ 55'' | E 80° 45′ 14'' |
| 3322 | Sinharagama Singharagama,Sinharagama | Sri Lanka, North Western Province Kurunegala District > Maho > Hithokadawala | populated place | N 7° 52′ 0'' | E 80° 15′ 0'' |
| 3323 | Singahagoda Singagoda,Singahagoda | Sri Lanka, Sabaragamuwa Province Kegalle District > Rambukkana Division > Kumbaldiwela | populated place | N 7° 15′ 32'' | E 80° 24′ 16'' |
| 3324 | Sillalai Chillalai,Sillalai | Sri Lanka, Northern Province Jaffna District > Valikamam South West Division > Sillalai South | populated place | N 9° 46′ 44'' | E 79° 57′ 5'' |
| 3325 | Seelanarawa Seelanarawa,Silanarawa | Sri Lanka, Sabaragamuwa Province Ratnapura District > Imbulpe Division > Maddethalawa | populated place | N 6° 41′ 20'' | E 80° 42′ 2'' |
| 3326 | Sewendana Sewendana,Sewendera | Sri Lanka, North Western Province Kurunegala District > Weerambugedera Division > Sevendana | populated place | N 7° 25′ 18'' | E 80° 14′ 54'' |
| 3327 | Sewendena Sewendana,Sewendena | Sri Lanka, North Western Province Kurunegala District > Alawwa Division > Maharachchimulla | populated place | N 7° 20′ 22'' | E 80° 12′ 58'' |
| 3328 | Sewendena Sewendana,Sewendena | Sri Lanka, North Western Province Kurunegala District > Pannala Division > Thambakanda | populated place | N 7° 17′ 25'' | E 79° 56′ 43'' |
| 3329 | Settappaduwa Sethappaduwa,Settappaduwa | Sri Lanka, Western Province | populated place | N 7° 7′ 32'' | E 79° 50′ 11'' |
| 3330 | Serankada Serankada,Serankade | Sri Lanka, Eastern Province Ampara District > Padiyathalawa > Serankada | populated place | N 7° 27′ 25'' | E 81° 16′ 50'' |
| 3331 | Senthankulam Senkanthulam,Senthankulam | Sri Lanka, Northern Province Jaffna District > Valikamam North Division > Ilavalai North West | populated place | N 9° 48′ 35'' | E 79° 59′ 55'' |
| 3332 | Senadeerayagama Senadeerayagama,Senadiriyagama | Sri Lanka, North Central Province Anuradhapura District > Palugaswewa Division > Senadhiriyagama | populated place | N 8° 4′ 24'' | E 80° 40′ 46'' |
| 3333 | Sembattai Sembattai,Sembettai | Sri Lanka, North Western Province Puttalam District > Mundel Division > Madurankuliya | populated place | N 7° 55′ 36'' | E 79° 49′ 28'' |
| 3334 | Semairippuwa Semairippuwa,Semairrippuwa | Sri Lanka, North Western Province Puttalam District > Chilaw Division > Kakkapalliya | populated place | N 7° 31′ 40'' | E 79° 48′ 59'' |
| 3335 | Sellaperumagana Sellaperumagama,Sellaperumagana | Sri Lanka, North Western Province Kurunegala District > Maho > Kirimetiyawa1 | populated place | N 7° 52′ 0'' | E 80° 19′ 0'' |
| 3336 | Selawa East Selawa,Selawa East | Sri Lanka, Sabaragamuwa Province Kegalle District > Aranayaka Division > Selawa West | populated place | N 7° 8′ 40'' | E 80° 29′ 58'' |
| 3337 | Seenigaslanda Seeniagaslanda,Seenigaslanda | Sri Lanka, Uva Province Badulla District > Mahiyanganaya > Meegahahena | populated place | N 7° 25′ 0'' | E 81° 1′ 0'' |
| 3338 | Sedarawela Sedarawela,Sedaraweli | Sri Lanka, North Western Province Puttalam District > Chilaw Division > Ilippadeniya | populated place | N 7° 33′ 54'' | E 79° 49′ 26'' |
| 3339 | Sarikkamulla Sarikamulla,Sarikkamulla | Sri Lanka, Western Province Kalutara District > Panadura Division > Keselwatta | populated place | N 6° 44′ 58'' | E 79° 54′ 0'' |
| 3340 | Sankuveli Chankuveli,Sankuveli | Sri Lanka, Northern Province Jaffna District > Valikamam South Division > Kantharodai | populated place | N 9° 44′ 37'' | E 80° 0′ 23'' |
| 3341 | Sangilikanadarawa Sangilikanadara,Sangilikanadarawa | Sri Lanka, North Central Province Anuradhapura District > Medawachchiya Division > Lindawewa1 | populated place | N 8° 31′ 0'' | E 80° 32′ 12'' |
| 3342 | Sangapaliya Sangapaliya,Sangappale | Sri Lanka, North Western Province Kurunegala District > Giribawa Division > Sangappalaya | populated place | N 8° 2′ 0'' | E 80° 11′ 53'' |
| 3343 | Sandanankulama Sandanam Kulama,Sandanankulama | Sri Lanka, North Western Province Puttalam District > Nawagattegama Division > Thammennawetiya | populated place | N 7° 59′ 44'' | E 80° 2′ 9'' |
| 3344 | Sandampokkaddi Chandanpokkaddi,Sandampokkaddi | Sri Lanka, Northern Province Jaffna District > Thenmaradchchi Division > Kodikamam South | populated place | N 9° 40′ 0'' | E 80° 14′ 0'' |
| 3345 | Sampoor  Sampoor,Sampur | Sri Lanka, Eastern Province Trincomalee District > Muthur > Sampoor West | populated place | N 8° 29′ 7'' | E 81° 17′ 27'' |
| 3346 | Samativadi Samativadi,Samatiwadi | Sri Lanka, North Western Province Puttalam District > Kalpitiya Division > Kurinjipitiya South | populated place | N 8° 12′ 0'' | E 79° 44′ 7'' |
| 3347 | Samarapakutevan Samarapaku,Samarapakutevan | Sri Lanka, Northern Province Jaffna District > Vadamaradchchi Sou > Karanavai Centre | populated place | N 9° 48′ 0'' | E 80° 11′ 0'' |
| 3348 | Samanabedda Samanabedda,Samanabedde | Sri Lanka, Western Province Gampaha District > Dompe > Samanabedda | populated place | N 6° 55′ 20'' | E 80° 5′ 3'' |
| 3349 | Saidalapitiya Saidalapitiya,Saldalpitiya | Sri Lanka, North Western Province Puttalam District > Arachchikattuwa Division > Karukupane | populated place | N 7° 37′ 0'' | E 79° 48′ 0'' |
| 3350 | Rupiwala Rupawala,Rupiwala | Sri Lanka, Southern Province Galle District > Hikkaduwa Division > Boossa | populated place | N 6° 4′ 36'' | E 80° 9′ 43'' |
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