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Sindalah (سندالة)
Sindalah (سندالة) is a luxury island resort in the Red Sea, about five kilometers off the NEOM coastline in northwest Saudi Arabia, and the first NEOM destination to open.
Singapore Island
Singapore Island (Pulau Ujong) is the main island of the Republic of Singapore, about 49 by 28 km with a 224 km coastline, generally flat within 15 m of sea level, and grown roughly 25 percent by land reclamation since 1822.
Singkep Island
Singkep Island (Pulau Singkep) is a 757-square-kilometer island in Indonesia's Lingga Archipelago, Riau Islands Province, separated from Sumatra by the Berhala Strait and known for its tin mining era.
Sint Eustatius
Sint Eustatius, known locally as Statia, is a small Dutch Caribbean island in the Leeward Islands that became a special municipality of the Netherlands in 2010.
Siple Island
Siple Island, a snow-covered Antarctic island about 70 mi long in Marie Byrd Land along the Getz Ice Shelf, hosts Mount Siple, a 3,110 m shield volcano, and is named for explorer Paul Siple.
Sipura Island
Sipura (Sipora) Island, Mentawai Islands Regency, West Sumatra, Indonesia: smallest of the four main Mentawai islands, site of Tuapejat regency capital, surf breaks like Lance's Right, and high northern tsunami vulnerability.
Siquijor
Siquijor, also called Isla del Fuego (Island of Fire), is the third smallest island province of the Philippines, in Central Visayas; 343.50 km2, six municipalities, provincial since 1971, known for folk healers and growing tourism.
Skeleton Coast
Skeleton Coast: northern Atlantic shore of Namibia, about 500 km from the Ugab to the Kunene River, famed for Benguela Current fog, whale bones and shipwrecks such as the Eduard Bohlen and Zeila, largely within Skeleton Coast National Park.
Skellig Michael
Skellig Michael (Irish: Sceilg Mhichíl), also called Great Skellig, is a rocky island off County Kerry, Ireland, bearing an early medieval monastery inscribed by UNESCO in 1996.
Skerry
A skerry is a small, rocky island or reef, often visible only at low tide, found chiefly along the glaciated coasts of Scotland and Scandinavia.
Skjoldungen
Skjoldungen (Saqqisikuik) is a large uninhabited island in southeastern Greenland's Sermersooq municipality, named in 1829 by W.A. Graah, site of a settlement founded 1938 and abandoned 1964-65.
Skopelos
Skopelos (Σκόπελος) is the second largest island of Greece's Northern Sporades, covered in pine forest and known as the main filming location of Mamma Mia! (2008).
Skorpios
Skorpios (Σκορπιός) is a private Ionian island east of Lefkada, Greece, bought by Aristotle Onassis in 1962, site of his 1968 wedding to Jackie Kennedy, sold in 2013 for €117 million to the Rybolovlev family and now being turned into a resort.
Smith Island
Smith Island, the southwesternmost island of the South Shetland Islands, Antarctica, named for explorer William Smith; 40 km long, rising to about 2,100 m at Mount Foster, with blueschist subduction-complex rocks metamorphosed 58-47 Ma.
Smith Peninsula (landform)
Smith Peninsula: an ice-covered, dog-legged peninsula on the Lassiter Coast, Palmer Land, Antarctica, between Keller and Nantucket Inlets, named for Walter "Smitty" Smith; also several peninsulas in Saskatchewan, Manitoba, and Nunavut.
Snæfellsnes
Snæfellsnes is a roughly 100-km peninsula in western Iceland, home to the 1,446 m ice-capped Snæfellsjökull stratovolcano, Snæfellsjökull National Park, and Iceland's first UNESCO Biosphere Reserve (2025).
Snake Island (Ukraine)
Snake Island (Zmiinyi, Leuke) is a 20-hectare Ukrainian island 37 km from the Danube delta, an ancient cult site of Achilles, subject of the 2009 ICJ Romania-Ukraine maritime case, and site of the famous February-June 2022 Russian occupation and withdrawal.
Snow Hill Island
Snow Hill Island (Isla Cerro Nevado) is an ice-covered island in the James Ross Archipelago, Weddell Sea, at 64°28'S 57°11'W, site of Nordenskjöld's 1902-03 winter station hut and the northernmost emperor penguin colony.
Snow Island
Snow Island (Isla Nevada) is an island in the South Shetland Islands, Antarctica, at 62°46'S 61°23'W, with President Head at its east end, ice-free President Head Peninsula, and a vanished chinstrap penguin colony.
Society Islands
The Society Islands (French: Archipel de la Société) are an archipelago of 14 islands in French Polynesia, divided into Windward and Leeward groups and containing Tahiti.
Socorro Island
Socorro Island (Isla Socorro), largest of Mexico's four Revillagigedo Islands, a volcanic island rising to Volcán Evermann (1,040 m) about 400 km southwest of Cabo San Lucas, with high plant and bird endemism, World Heritage status since 2016, and famous giant manta ray diving.
Somerset Island (Nunavut)
Somerset Island (Nunavut), a 24,786 km² uninhabited island in the Canadian Arctic Archipelago's Qikiqtaaluk Region; Franklin-search wintering site at Port Leopold (1848), Peary caribou range, Siluro-Devonian geology on the Boothia Arch.
Sørkapp
Sørkapp is the southern cape of Spitsbergen, standing on the island Sørkappøya off Sørkapp Land; it is also a Ramsar site and 1973 bird reserve.
Sørkapp Land
Sørkapp Land is the southernmost peninsula of Spitsbergen, Svalbard, Norway, about 1,300–1,400 km², joined to the rest of the island by a glacier isthmus that narrowed from 28 km (1899–1900) to about 5–6 km, possibly making it an island by 2030–2035; Sørkapp point lies on Sørkappøya at 76°28'N 16°36'E.
Sørøya
Sørøya (Sállan) is Norway's fourth-largest island, 812 km², in Hammerfest and Hasvik municipalities, Vest-Finnmark; largest island without mainland road link, known for its puffin colony, WWII partisan history, and sea fishing.
South Andaman Island
South Andaman Island, third largest island of India's Andaman group (1,348 km²), site of Port Blair (Sri Vijaya Puram), the 1858 penal settlement, the Cellular Jail, and the South Andaman district capital.
South Aulatsivik Island
South Aulatsivik Island (Aulatsivik, Newark Island) is a 456 km2 island in the Nain archipelago, Labrador, about 10 km from Nain; largest Labrador Coast island, spruce forests, Inuit archaeology to 7065 BP.
South Funen Archipelago
South Funen Archipelago (Det Sydfynske Øhav), a Danish archipelago of about 55 islands south of Funen between Ærø, Tåsinge, and Langeland; Ramsar site no. 156 since 1977 and a UNESCO Global Geopark since 2024.
South Georgia
South Georgia: main island of the UK Overseas Territory of South Georgia & the South Sandwich Islands, 800 miles SE of the Falklands; 3,755 km², over half ice covered, Mt Paget 2,934 m; former whaling hub at Grytviken, no permanent residents, Argentina claims it since 1927.
South Island
The South Island (Te Waipounamu), New Zealand's larger but less populous main island: 7.3% census growth 2018-2023, Canterbury its largest region, the Alpine Fault and Southern Alps along its spine.