Sipacate is a resort town and municipality on the Pacific coast of Guatemala, in the Escuintla Department about 22 miles (36 km) west of Puerto San José.

Sipadan (Malay: Pulau Sipadan) is the only oceanic island in Malaysia, rising 600 metres (2,000 ft) from the seabed. It is located in the Celebes Sea off the east coast of Sabah, Malaysia.

The Siwa Oasis is an urban oasis in Egypt between the Qattara Depression and the Great Sand Sea in the Western Desert, 50 km east of the Libyan border, and 560 km from Cairo.

The Sjoa river provides the outlet from lake Gjende at Gjendesheim in the Jotunheimen mountains of Norway's Jotunheim National Park. It flows eastward into the Gudbrandsdalslågen river via the Heidal traditional district in the Gudbrandsdal.

Skaftafell is a wilderness area in Iceland's Vatnajökull National Park. Its huge glaciers include Skaftafellsjökull and Svínafellsjökull.

Slavonia is, with Dalmatia, Croatia proper and Istria, one of the four historical regions of Croatia.

The Slieve Bloom Way is a long-distance trail around the Slieve Bloom Mountains in Ireland. It is an 84-kilometre long circular route that begins and ends at Glenbarrow, near the village of Rosenallis, County Laois.

The town of Sligo, in the north of Ireland, straddles the Garavogue River where it meets Sligo Bay. It’s known for its literary heritage and rugged countryside. Ruined medieval Sligo Abbey has carved tombs and a 15th-century altar.

The Slovak Karst is one of the mountain ranges of the Slovenské Rudohorie Mountains in the Carpathians in southern Slovakia. It consists of a complex of huge karst plains and plateaus. Since 1973 it was a protected landscape area.

This article is about the mountain in western Iceland. For the Manx volcanic mountain of the same name, see Snaefell.