| Name | Country | Feature class | Latitude | Longitude | |
|---|---|---|---|---|---|
4451  | Siyambalawinna | Sri Lanka, Uva Province Badulla District > Mahiyanganaya > Dambana | locality | N 7° 27′ 18'' | E 81° 10′ 27'' |
| 4452 | Siyambalawa | Sri Lanka, North Central Province Anuradhapura District > Kahatagasdigiliya Divison > Kumbukwewa | locality | N 8° 22′ 18'' | E 80° 49′ 5'' |
| 4453 | Siyambalawa | Sri Lanka, North Central Province Anuradhapura District > Nochchiyagama Division > Ambagahawewa3 | locality | N 8° 18′ 59'' | E 80° 12′ 32'' |
4454  | Siyambalawa Siyambalawa,Siyambalawewa,Siyambalewa | Sri Lanka, North Western Province Kurunegala District > Ganewatta Division > Uyangalla | populated place | N 7° 42′ 0'' | E 80° 20′ 0'' |
| 4455 | Siyambalangamuwa Siyambalangamuwa,Siyambalangomuwa,Siyambalanwatta | Sri Lanka, North Western Province Kurunegala District > Ibbagamuwa Division > Diddeniya | populated place | N 7° 40′ 24'' | E 80° 28′ 29'' |
| 4456 | Siyambalangamuwa | Sri Lanka, Sabaragamuwa Province Kegalle District > Rambukkana Division > Udanvita | locality | N 7° 22′ 43'' | E 80° 22′ 15'' |
| 4457 | Siyambalakatuwa | Sri Lanka, Southern Province Hambantota District > Ambalantota Division > Murawesihena | locality | N 6° 12′ 38'' | E 80° 55′ 19'' |
| 4458 | Siyambalakadawara | Sri Lanka, North Western Province Kurunegala District > Panduwasnuwara Division > Kadawalagedara | locality | N 7° 36′ 37'' | E 80° 8′ 27'' |
| 4459 | Siyambalagaswewa | Sri Lanka, North Central Province Anuradhapura District > Kahatagasdigiliya Divison > Gonumeruwewa | locality | N 8° 29′ 35'' | E 80° 41′ 36'' |
| 4460 | Siyambalagaswewa | Sri Lanka, North Central Province Anuradhapura District > Nuwaragam Palata Central Division > Helambagaswewa2 | locality | N 8° 29′ 51'' | E 80° 20′ 17'' |
| 4461 | Siyambalagaswewa | Sri Lanka, North Central Province Anuradhapura District > Rambewa Divison > Siyambalagaswewa | locality | N 8° 29′ 11'' | E 80° 28′ 44'' |
| 4462 | Siyambalagaswewa | Sri Lanka, North Central Province Anuradhapura District > Rambewa Divison > Medagama1 | locality | N 8° 27′ 50'' | E 80° 25′ 3'' |
| 4463 | Siyambalagaswewa | Sri Lanka, North Western Province Kurunegala District > Giribawa Division > Hettiarachchigama | locality | N 8° 5′ 50'' | E 80° 9′ 25'' |
| 4464 | Siyambalagaswewa | Sri Lanka, North Western Province Puttalam District > Anamaduwa Division > Thonigala | locality | N 7° 54′ 19'' | E 79° 57′ 21'' |
| 4465 | Siyambalagaswewa | Sri Lanka, North Western Province Kurunegala District > Kobeigane > Bamunugama2 | locality | N 7° 39′ 29'' | E 80° 9′ 51'' |
| 4466 | Siyambalagaskotuwa | Sri Lanka, North Western Province Kurunegala District > Kuliyapitiya East Division > Kotadeniyawa | locality | N 7° 30′ 20'' | E 80° 11′ 49'' |
| 4467 | Siwalapitiya | Sri Lanka, North Central Province Anuradhapura District > Mahavilachchiya Division > Dunumadalawa1 | locality | N 8° 23′ 48'' | E 80° 12′ 1'' |
| 4468 | Sittaraveli | Sri Lanka, North Western Province Puttalam District > Puttalam Division > Manalthivu | locality | N 8° 4′ 28'' | E 79° 51′ 42'' |
| 4469 | Sittamadama | Sri Lanka, North Western Province Puttalam District > Arachchikattuwa Division > Weerakumandaluwa | locality | N 7° 36′ 15'' | E 79° 48′ 56'' |
| 4470 | Sirikkulama | Sri Lanka, North Central Province Anuradhapura District > Ipalogama Division > Sangattewa | locality | N 8° 6′ 48'' | E 80° 29′ 14'' |
| 4471 | Siribila | Sri Lanka, Western Province Kalutara District > Dodangoda Division > Eladoowa | locality | N 6° 30′ 0'' | E 80° 3′ 0'' |
| 4472 | Seeppukulama Seeppukulama,Sippikkulam,Sippikulama,Sippukulama | Sri Lanka, North Central Province Anuradhapura District > Mihinthale > Seeppukulama | populated place | N 8° 22′ 49'' | E 80° 35′ 19'' |
| 4473 | Sinna Naga Villu | Sri Lanka, North Western Province Puttalam District > Vanathavillu Division > Serakkuliya | locality | N 8° 14′ 8'' | E 79° 49′ 53'' |
| 4474 | Chinna adampan Chinna adampan,Sinna-adampan,Sinnadampan | Sri Lanka, Northern Province Vavuniya District > Vavuniya North > Sinnadampan | populated place | N 9° 2′ 51'' | E 80° 33′ 21'' |
| 4475 | Sinhapitiya  Singhapitiya,Sinhapitiya | Sri Lanka, Central Province Kandy District > Uda Palata Division > Sinhapitiya North | populated place | N 7° 10′ 0'' | E 80° 33′ 0'' |
| 4476 | Sinhalagoda | Sri Lanka, Sabaragamuwa Province Ratnapura District > Ayagama Division > Sinhalagoda | locality | N 6° 40′ 48'' | E 80° 17′ 53'' |
| 4477 | Sinhala Etawirawewa | Sri Lanka, North Central Province Anuradhapura District > Kebitigollewa Division > Kiriketuwewa | locality | N 8° 38′ 39'' | E 80° 43′ 16'' |
| 4478 | Simaveli South | Sri Lanka, North Western Province Puttalam District > Puttalam Division > Marikkar Street | locality | N 8° 3′ 15'' | E 79° 50′ 44'' |
| 4479 | Silwatgama | Sri Lanka, North Western Province Kurunegala District > Panduwasnuwara Division > Pallegama | locality | N 7° 36′ 13'' | E 80° 2′ 56'' |
| 4480 | Silverdale | Sri Lanka, Western Province Kalutara District > Beruwala Division > Hirigalgodella | locality | N 6° 32′ 0'' | E 80° 1′ 0'' |
| 4481 | Silavatturai Silavatturai,Silavaturai,Silvatturai | Sri Lanka, Northern Province | populated place | N 8° 44′ 48'' | E 79° 56′ 52'' |
4482  | Sigiri Rock Sigiri Rock,Sigiriya | Sri Lanka, Central Province Matale District > Dambulla > Sigiriya | mountain elevation 363m | N 7° 57′ 25'' | E 80° 45′ 36'' |
| 4483 | Seththikulama | Sri Lanka, North Central Province Anuradhapura District > Ipalogama Division > Heenukwegama | locality | N 8° 6′ 40'' | E 80° 33′ 17'' |
| 4484 | Seruvila Seruvila,Seruvilla,Seruwawila | Sri Lanka, Eastern Province Trincomalee District > Seruvila > Seruvila | populated place | N 8° 22′ 6'' | E 81° 19′ 2'' |
| 4485 | Seruwawa | Sri Lanka, North Western Province Kurunegala District > Kurunegala Division > Seruwawa | locality | N 7° 35′ 29'' | E 80° 19′ 45'' |
| 4486 | Seruvila-Allai Sanctuary | Sri Lanka, Eastern Province | reserve | N 8° 22′ 0'' | E 81° 18′ 0'' |
| 4487 | Seruvila Allai Sanctuary | Sri Lanka, Eastern Province | reserve | N 8° 18′ 0'' | E 81° 21′ 0'' |
| 4488 | Serunewa | Sri Lanka, North Central Province Anuradhapura District > Horowupotana Division > Diyatittawewa | locality | N 8° 26′ 11'' | E 80° 55′ 55'' |
| 4489 | Serugolla | Sri Lanka, North Western Province Kurunegala District > Narammala Division > Embalapola | locality | N 7° 24′ 27'' | E 80° 15′ 21'' |
| 4490 | Sengamuwa | Sri Lanka, Eastern Province Ampara District > Pottuvil Division > Kalappukaddu | locality | N 6° 53′ 8'' | E 81° 46′ 12'' |
| 4491 | Sendiriyamulla | Sri Lanka, North Western Province Puttalam District > Dankotuwa Division > Sendiriyamulla | locality | N 7° 18′ 34'' | E 79° 56′ 11'' |
| 4492 | Senanayake Samudra Sanctuary | Sri Lanka, Uva Province | reserve | N 7° 13′ 0'' | E 81° 27′ 0'' |
| 4493 | Senanayaka Samudraya Sanctuary | Sri Lanka, Eastern Province | reserve | N 7° 9′ 37'' | E 81° 31′ 44'' |
| 4494 | Semewa | Sri Lanka, North Central Province Anuradhapura District > Medawachchiya Division > Moragoda1 | locality | N 8° 34′ 45'' | E 80° 34′ 48'' |
| 4495 | Sellankandal Forest Reserve | Sri Lanka, North Western Province | forest reserve | N 8° 1′ 51'' | E 79° 53′ 45'' |
| 4496 | Sellaka Oya Sanctuary | Sri Lanka, Eastern Province | reserve | N 7° 9′ 4'' | E 81° 32′ 21'' |
| 4497 | Sellaka Oya Sanctuary | Sri Lanka, Uva Province | reserve | N 7° 2′ 59'' | E 81° 31′ 33'' |
| 4498 | Seguwantivu | Sri Lanka, North Western Province Puttalam District > Puttalam Division > Manalthivu | locality | N 8° 4′ 48'' | E 79° 48′ 27'' |
| 4499 | Sanguthtattana Sangutatane,Sanguthtattana,Sangutthattane | Sri Lanka, North Western Province Puttalam District > Chilaw Division > Munneshwarama | populated place | N 7° 34′ 56'' | E 79° 48′ 40'' |
| 4500 | Sangilipalama Sangilipalam,Sangilipalama | Sri Lanka, Central Province Nuwara Eliya District > Kotmale Division > Rambodagama | populated place | N 7° 3′ 27'' | E 80° 40′ 57'' |
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