word | | Location |
| Islands | Saint Martin | Caribbean, located in the Leeward Islands (northern) group; French part of the island of Saint Martin in the Caribbean Sea; Saint Martin lies east of the US Virgin Islands |
| islands | Saint Pierre and Miquelon | Northern North America, islands in the North Atlantic Ocean, south of Newfoundland (Canada) |
| islands | Saint Vincent and the Grenadines | Caribbean, islands between the Caribbean Sea and North Atlantic Ocean, north of Trinidad and Tobago |
| islands | Samoa | Oceania, group of islands in the South Pacific Ocean, about half way between Hawaii and New Zealand |
| islands | Sao Tome and Principe | Central Africa, islands in the Gulf of Guinea, straddling the Equator, west of Gabon |
| islands | Singapore | Southeastern Asia, islands between Malaysia and Indonesia |
| Islands | Sint Maarten | Caribbean, located in the Leeward Islands (northern) group; Dutch part of the island of Saint Martin in the Caribbean Sea; Sint Maarten lies east of the US Virgin Islands |
| islands | Solomon Islands | Oceania, group of islands in the South Pacific Ocean, east of Papua New Guinea |
| islands | South Georgia and the South Sandwich Islands | Southern South America, islands in the South Atlantic Ocean, east of the tip of South America |
| islands | Spratly Islands | Southeastern Asia, group of reefs and islands in the South China Sea, about two-thirds of the way from southern Vietnam to the southern Philippines |
| islands | Svalbard | Northern Europe, islands between the Arctic Ocean, Barents Sea, Greenland Sea, and Norwegian Sea, north of Norway |
| islands | Taiwan | Eastern Asia, islands bordering the East China Sea, Philippine Sea, South China Sea, and Taiwan Strait, north of the Philippines, off the southeastern coast of China |