| Country | Location |
| Saint Helena | islands in the South Atlantic Ocean, about midway between South America and Africa; Ascension Island lies 700 nm northwest of Saint Helena; Tristan da Cunha lies 2,300 nm southwest of Saint Helena |
| Saint Kitts and Nevis | Caribbean, islands in the Caribbean Sea, about one-third of the way from Puerto Rico to Trinidad and Tobago |
| Saint Lucia | Caribbean, island between the Caribbean Sea and North Atlantic Ocean, north of Trinidad and Tobago |
| 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 |
| Saint Pierre and Miquelon | Northern North America, islands in the North Atlantic Ocean, south of Newfoundland (Canada) |
| Saint Vincent and the Grenadines | Caribbean, islands between the Caribbean Sea and North Atlantic Ocean, north of Trinidad and Tobago |
| Samoa | Oceania, group of islands in the South Pacific Ocean, about half way between Hawaii and New Zealand |
| San Marino | Southern Europe, an enclave in central Italy |
| Sao Tome and Principe | Central Africa, islands in the Gulf of Guinea, straddling the Equator, west of Gabon |
| Saudi Arabia | Middle East, bordering the Persian Gulf and the Red Sea, north of Yemen |