World Factbook
- Saar (region)
- Saaremaa (island)
- Saba (island)
- Sabah (state)
- Sable Island
- Safety Islands (Iles du Salut)
- Sahara Occidental (former name for Western Sahara)
- Saigon (city; former name for Ho Chi Minh City)
- Saint Brandon (Cargados Carajos Shoals)
- Saint Christopher (island)
- Saint Christopher and Nevis
- Saint-Denis (regional capital)
- Saint Eustatius (island)
- Saint George's (capital)
- Saint George's Channel
- Saint Helena Island
- Saint Helens, Mount (volcano)
- Saint Helier (capital)
- Saint John's (capital)
- Saint John (city)
- Saint Lawrence, Gulf of
- Saint Lawrence Island
- Saint Lawrence Seaway
- Saint Paul Island
- Saint Paul Island (Ile Saint-Paul)
- Saint Peter and Saint Paul Rocks (Penedos de Sao Pedro e Sao Paulo)
- Saint Peter Port (capital)
- Saint Petersburg (city; former capital)
- Saint-Pierre (capital)
- Saint Thomas (island)
- Saint Vincent Passage
- Saipan (island)
- Sak'art'velo (local name for Georgia)
- Sakhalin Island (Ostrov Sakhalin)
- Sakishima Islands
- Sala y Gomez, Isla (island)
- Salisbury (city; former name for Harare)
- Salzburg (city)
- Samar (island)
- Samaria (region)
- Samos (island)
- Sanaa (capital)
- San Ambrosio, Isla (island)
- San Andres y Providencia, Archipielago (island group)
- San Bernardino Strait
- San Felix, Isla (island)
- San Jose (capital)
- San Juan (capital)
- San Marino (capital)
- San Salvador (capital)
- Santa Cruz (city)
- Santa Cruz Islands
- Santa Sede (local name for the Holy See)
- Santiago (capital)
- Santo Antao (island)
- Santo Domingo (capital)
- Sao Paulo (city)
- Sao Pedro e Sao Paulo, Penedos de (rocks)
- Sao Tiago (island)
- Sao Tome (island)
- Sapporo (city)
- Sapudi Strait
- Sarajevo (capital)
- Sarawak (state)
- Sardinia (island)
- Sargasso Sea (region)
- Sark (island)
- Savage Island (former name for Niue)
- Savu Sea
- Saxony (region)
- Schleswig-Holstein (region)
- Schweiz (local German name for Switzerland)
- Scotland (region)
- Scott Island
- Senyavin Islands
- Seoul (capital)
- Serendib (former name for Sri Lanka)
- Serrana Bank (shoal)
- Serranilla Bank (shoal)
- Settlement, The (capital)
- Severnaya Zemlya (island group; also Northland)
- Shaba (region)
- Shag Island
- Shag Rocks
- Shanghai (city)
- Shenyang (city; also Mukden)
- Shetland Islands
- Shikoku (island)
- Shikotan (island)
- Shqiperia (local name for Albania)
- Siam (former name for Thailand)
- Siberia (region)
- Sibutu Passage
- Sicily, Strait of
- Sicily (island)
- Sidra, Gulf of
- Sikkim (state)
- Sinai Peninsula
- Singapore (capital)
- Singapore Strait
- Sinkiang (autonomous region; also Xinjiang)
- Sint Eustatius (island)
- Sjaelland (island)
- Skagerrak (strait)
- Skopje (capital)
- Slavonia (region)
- Slovenija (local name for Slovenia)
- Slovensko (local name for Slovakia)
- Smyrna (region; former name for Izmir)
- Society Islands (Iles de la Societe)
- Socotra (island)
- Sofia (capital)
- Solomon Islands, northern
- Solomon Islands, southern
- Solomon Sea
- Somaliland (region)
- Somers Islands (former name for Bermuda)
- Songkhla (city)
- Sound, The (strait; also Oresund)
- South Atlantic Ocean
- South China Sea
- Southern Grenadines (island group)
- Southern Rhodesia (former name for Zimbabwe)
- South Georgia (island)
- South Island
- South Korea
- South Orkney Islands
- South Ossetia (region)
- South Pacific Ocean
- South Sandwich Islands
- South Shetland Islands
- South Tyrol (region)
- South Vietnam (former name for the southern portion of Vietnam)
- South-West Africa (former name for Namibia)
- South Yemen (People's Democratic Republic of Yemen; now part of Yemen)
- Spanish Guinea (former name for Equatorial Guinea)
- Spanish Morocco (former name for northern Morocco)
- Spanish North Africa (exclaves)
- Spanish Sahara (former name)
- Spice Islands (Moluccas)
- Spitsbergen (island)
- Srbija (local name for Serbia)
- St. John's (city)
- Stanley (capital)
- Stockholm (capital)
- Strasbourg (city)
- Stuttgart (city)
- Sucre (constitutional capital)
- Suez, Gulf of
- Suez Canal
- Suisse (local French name for Switzerland)
- Sulawesi (island; Celebes)
- Sulawesi Sea
- Sulu Archipelago (island group)
- Sulu Sea
- Sumatra (island)
- Sumba (island)
- Sumba Strait
- Sumbawa (island)
- Sunda Strait
- Suomi (local name for Finland)
- Surabaya (city)
- Surigao Strait
- Surinam (former name for Suriname)
- Suriyah (local name for Syria)
- Surtsey (volcanic island)
- Suva (capital)
- Sverdlovsk (city; also Yekaterinburg)
- Sverige (local name for Sweden)
- Svizzera (local Italian name for Switzerland)
- Swains Island
- Swan Islands
- Sydney (city)