| Name | Type |
|---|---|
| Sim-Griffith Ruth Gorge (2010) | Expedition Report |
| Sima Pumacocha 2004 (2004) | Expedition Report |
| Singekang Valley (2010) | Expedition Report |
| Sino-British Botanical Expedition to West Yunnan (1981) (1981) | Expedition Report |
| Siruanch Glacier 2001 (2001) | Expedition Report |
| Sissu Nala '98 (1998) | Expedition Report |
| Ski The Pamir (2019) | Expedition Report |
| SmoG in Greenland (2001) | Expedition Report |
| Snow Lake Expedition (1989) | Expedition Report |
| Sokha Brakk (1992) | Expedition Report |
| Solu Khumbu (2011) | Expedition Report |
| South Georgia '03 (2003) | Expedition Report |
| South Georgia '05 (2005) | Expedition Report |
| South Georgia Survey 1955-6 (1956) | Expedition Report |
| South Greenland 2001 (2001) | Expedition Report |
| South Parbati 1973 (Kishtwar Himal Expedition) (1973) | Expedition Report |
| South Patagonian Ice-Cap Expedition (1989) | Expedition Report |
| South Tower of Paine 2001 (2001) | Expedition Report |
| South Wales Karakoram Expedition (1985) | Expedition Report |
| South West Face of Huaguruncho (2017) | Expedition Report |