Geographic Name | Country Reference | Latitude (deg min) | Longitude (deg min) |
| South Atlantic Ocean | Atlantic Ocean | 30 00 S | 15 00 W |
| South China Sea | Pacific Ocean | 10 00 N | 113 00 E |
| South Georgia (island) | South Georgia and the South Sandwich Islands | 54 15 S | 36 45 W |
| South Island | New Zealand | 43 00 S | 171 00 E |
| South Korea | South Korea | 37 00 N | 127 30 E |
| South Orkney Islands | Antarctica | 61 00 S | 45 00 W |
| South Ossetia (region) | Georgia | 42 20 N | 44 00 E |
| South Pacific Ocean | Pacific Ocean | 30 00 S | 130 00 W |
| South Sandwich Islands | South Georgia and the South Sandwich Islands | 57 45 S | 26 30 W |
| South Shetland Islands | Antarctica | 62 00 S | 59 00 W |
| South Tyrol (region) | Italy | 46 30 N | 10 30 E |
| South Vietnam (former name for the southern portion of Vietnam) | Vietnam | 12 00 N | 108 00 E |
| South Yemen (People's Democratic Republic of Yemen; now part of Yemen) | Yemen | 14 00 N | 48 00 E |
| South-West Africa (former name for Namibia) | Namibia | 22 00 S | 17 00 E |
| Southern Grenadines (island group) | Grenada | 12 20 N | 61 30 W |
| Southern Rhodesia (former name for Zimbabwe) | Zimbabwe | 20 00 S | 30 00 E |
| Soviet Union (former name of a large Eurasian empire, roughly coequal with the former Russian Empire) | Armenia, Azerbaijan, Belarus, Estonia, Georgia, Kazakhstan, Kyrgyzstan, Latvia, Lithuania, Moldova, Russia, Tajikistan, Turkmenistan, Ukraine, Uzbekistan | | |
| Spanish Guinea (former name for Equatorial Guinea) | Equatorial Guinea | 2 00 N | 10 00 E |
| Spanish Morocco (former name for northern Morocco) | Morocco | 32 00 N | 7 00 W |
| Spanish North Africa (exclaves) | Spain (Ceuta, Islas Chafarinas, Melilla, Penon de Alhucemas, Penon de Velez de la Gomera) | 35 15 N | 4 00 W |
| Spanish Sahara (former name) | Western Sahara | 24 30 N | 13 00 W |
| Spanish West Africa (former name for Ifni and Spanish Sahara) | Morocco, Western Sahara | 25 00 N | 13 00 W |
| Spice Islands (Moluccas) | Indonesia | 2 00 S | 28 00 E |
| Spitsbergen (island) | Svalbard | 78 00 N | 20 00 E |
| Srbija (local name for Serbia) | Serbia | 44 00 N | 21 00 E |
| St. John's (city) | Canada (Newfoundland) | 47 34 N | 52 43 W |