Se
- Selwa 7, Saudi Arabia
- Selwa 9, Saudi Arabia
- Semarang, Java, Indonesia
- Sendai, Japan
- Sendai Yanagiu, Miyagi, Japan
- Sendas, Braganca, Portugal
- Senegal
- Senesenguhta, New York, USA
- Seoul, Korea
- Sepana, Papua, Indonesia
- Sepik, Papua New Guinea
- Serbia
- Serpa, Beja, Portugal
- Seton Creek, British Columbia, Canada
- Seward Peninsula, Alaska, USA
- Seward Peninsula, Northwest Arctic Borough, Alaska, USA
- Seychelles
- Seymour Inlet, British Columbia, Canada
SgSh
- Shaanxi, China
- Shakan, Kosciusko Island, Alaska, USA
- Shaktoolik, Alaska, USA
- Shan, Burma
- Shandong, China
- Shanghai, China
- Shantou, Guangdong, China
- Shanxi, China
- Shatin, Hong Kong, China
- Shawbury District, Jamaica
- Shefa, Vanuatu
- Shefferville, Québec province, Canada
- Shemya Island, Aleutian Islands, Alaska, USA
- Shendi, Nile, Sudan
- Shenzhen, Guangdong, China
- Sheshatshiu, Labrador, Newfoundland, Canada
- Sheshatshiu, Terre-Neuve-et-Labrador, Canada
- Shields Site, British Columbia, Canada
- Shiga, Japan
- Shimane, Japan
- Shingle Point, British Columbia, Canada
- Shio-Otani, Niigata, Japan
- Shiping, Yunnan, China
- Shiprock, New Mexico, USA
- Shiraoi, Hokkaido, Japan
- Shirley, British Columbia, Canada
- Shiroishi, Miyagi, Japan
- Shishmaref, Seward Peninsula, Alaska, USA
- Shiwan, Guangdong, China
- Shizuoka, Japan
- Shoal Bay, British Columbia, Canada
- Shoalwater Bay, Pacific County, Washington, USA
- Shoida-Machi, Saga, Japan
- Shortland Islands, Solomon Islands
- Shrigonda, Maharashtra, India
- Shrirampur, Maharashtra, India
- Shropshire, England
- Shushartie Bay, British Columbia, Canada
- Shuswap, British Columbia, Canada
- Shuswap Lake, British Columbia, Canada
Si
- Siang, Arunachal Pradesh, India
- Siang District, Arunachal Pradesh, India
- Siatosha Shrine, Zuni, Towoyalnai Mountain, New Mexico, USA
- Siberia, Russia
- Siberia, Russia, Asia
- Siberut, West Sumatra, Indonesia
- Sibundoy, Putumayo, Colombia
- Sicamous, British Columbia, Canada
- Sichuan, China
- Sicily, Italy
- Sick Nar Ranku, Taku, Juneau Borough, Alaska, USA
- Sick Nar Son Kee, Juneau Borough, Alaska, USA
- Sidney, British Columbia, Canada
- Sidney, Vancouver Island, British Columbia, Canada
- Sieburg, Westphalia, Germany
- Siem Reab, Cambodia
- Siena, Emilia-Romagna, Italy
- Siena, Tuscany, Italy
- Sierra Leone
- Sierra Vista, Arizona, USA
- Sigatoka, Fiji
- Siguirusua River, Colombia
- Sikaiana, Solomon Islands
- Silesia, Germany
- Siletz, Oregon, USA
- Siletz Indian Reservation, Lincoln County, Oregon, USA
- Siletz River, Oregon, USA
- Silifke, Mersin, Turkey
- Sillustani, Puno, Peru
- Similkameen, Canada
- Similkameen, Washington, USA
- Simpson Bay, Canada
- Simutak, Greenland
- Sinclair Lake, British Columbia, Canada
- Sindh, Pakistan
- Singapore
- Sinkut Creek, British Columbia, Canada
- Sinodun Hills, Oxfordshire, England
- Sinta Ka Heen Ee, Juneau Borough, Alaska, USA
- Sinta Ka Heenee, Juneau Borough, Alaska, USA
- Sinta-ka-heen-ee, Admiralty Island, Alaska, USA