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South African Class 24 2-8-4
The South African Class 24 2-8-4 of 1949 is a Cape gauge branch-line steam locomotive, the only 2-8-4 Berkshire type used in South Africa, built by the North British Locomotive Company.
South African Class 25 4-8-4
The South African Railways Class 25 4-8-4 of 1953 is a condensing steam locomotive, with ninety built by Henschel and North British to haul trains across the water-scarce Karoo.
South African Class NG G16 2-6-2+2-6-2
The South African Class NG G16 2-6-2+2-6-2, or NGG16, is a 2 ft gauge Garratt steam locomotive class built for South African Railways between 1937 and 1968.
South African Class NG6 4-4-0
The South African Class NG6 4-4-0, or Lawley, is a narrow-gauge steam locomotive built in the 1890s for the Beira Railway and bought second-hand by South African Railways around 1930.
South African Council for Natural Scientific Professions
The South African Council for Natural Scientific Professions (SACNASP) is South Africa's legislated regulator of natural scientists, established in 1982 under the Natural Scientists Act.
South African energy crisis
The South African energy crisis is a prolonged electricity shortage managed by Eskom through rolling blackouts called load shedding, which began in 2007 and peaked in 2023.
South African Institution of Civil Engineering
The South African Institution of Civil Engineering (SAICE) is the professional body for civil engineers in South Africa, established in 1903 and recognized by the Engineering Council of South Africa.
South African locomotive numbering and classification
The system by which South Africa's railways assign locomotive classes and numbers, from three pre-Union railways merged into the SAR in 1910 to today's Transnet Freight Rail.
South African National Roads Agency
The South African National Roads Agency (SANRAL) is a South African state-owned company, established in 1998, that plans, builds, and maintains the national road network.
South African Rail Commuter Corporation
The South African Rail Commuter Corporation was a South African state-owned company that owned the country's commuter rail assets from 1990 until its absorption into PRASA in 2009.
South African Renewable Energy Independent Power Producer Procurement Programme
The South African Renewable Energy Independent Power Producer Procurement Programme (REIPPPP) is a competitive auction program launched in 2011 to buy renewable electricity from private producers.
South Air
South Air is a Pakistani domestic regional airline based in Karachi, founded in 2025 and backed by SOS Group, which began scheduled ATR 72 flights on 16 July 2026.
South Arne Oil and Gas Field
South Arne, also known as Syd Arne, is an oil and gas field in the Danish sector of the North Sea, discovered in 1969 and producing since 1999.
South Atlantic Petroleum
South Atlantic Petroleum (SAPETRO) is a privately held Nigerian oil and gas exploration and production company founded in 1995 by former defense minister General TY Danjuma.
South Australian
South Australian: 1868 Sunderland-built composite clipper of Devitt & Moore's Adelaide Line, London-South Australia trade; sank off Lundy 14 February 1889; wreck is a Scheduled Monument (NHLE 1465225), distinct from the 1837 barque of the same name.
South Australian Railways
South Australian Railways (SAR) was the government railway agency of South Australia from 1856 to 1975, building the state's railways and operating three different track gauges.
South Australian Railways 520 class
The South Australian Railways 520 class, nicknamed the "Whispering Giants", was twelve streamlined 4-8-4 steam locomotives built at Islington Workshops between 1943 and 1947 for fast passenger work on lightly laid lines.
South Australian Railways steel carriage stock
The South Australian Railways steel carriage stock was a fleet of all-steel broad gauge passenger carriages built at the Islington Railway Workshops between 1936 and 1942.
South Bangkok power station
South Bangkok power station (โรงไฟฟ้าพระนครใต้) is an Electricity Generating Authority of Thailand plant in Samut Prakan Province south of Bangkok, operating as a combined cycle plant since the 1980s.
South Bow
South Bow, formally South Bow Corporation, is a Canadian energy infrastructure company created when TC Energy spun off its Liquids Pipelines business on October 1, 2024, operating the Keystone Pipeline system.
South Bridge
South Bridge, also called Crowthorpe Bridge, is an 18th-century seven-arch limestone bridge over the River Nene between Oundle and Barnwell, Northamptonshire; a scheduled monument (NHLE 1003627) and Grade II listed building, distinct from Edinburgh's South Bridge.
South Carolina Department of Transportation
The South Carolina Department of Transportation (SCDOT) is the state agency responsible for South Carolina's highways, established in 1993. It maintains over 41,000 road miles, the fourth largest state-owned system in the nation.
South Carolina Public Service Authority
South Carolina Public Service Authority, commonly known as Santee Cooper, is a state-owned electric and water utility headquartered in Moncks Corner, South Carolina, created by the General Assembly in 1934.
South Caucasus Gas Pipeline
The South Caucasus Pipeline (SCP), also known as the Baku-Tbilisi-Erzurum pipeline, carries gas from Azerbaijan's Shah Deniz field through Georgia to Turkey's grid at Erzurum, completed in 2006.
South Central Connecticut Regional Water Authority
The South Central Connecticut Regional Water Authority, a Connecticut nonprofit public corporation created in 1977, supplies water to the greater New Haven area and acquired the New Haven Water Company in 1980.
South Central Railway zone
South Central Railway is a zone of Indian Railways headquartered at Secunderabad, Telangana. Formed in 1966, it carries heavy freight and passenger traffic in southern India.
South Coast Wind
South Coast Wind, known until 2023 as Mayflower Wind, is a proposed offshore wind farm in federal waters off Massachusetts with up to 141 turbines and 2,400 megawatts of capacity.
South Dakota Department of Transportation
The South Dakota Department of Transportation (SDDOT) is the state agency responsible for South Dakota's 7,794-mile state highway system, plus aeronautics, rail, and transit programs, headquartered in Pierre.
South Dakota-class battleship (1939)
The South Dakota class (1939) was a group of four United States Navy fast battleships, BB-57 through BB-60, completed in 1942 and serving in the Pacific during World War II.
South Eastern Coalfields
South Eastern Coalfields Limited (SECL) is a subsidiary of Coal India Limited headquartered in Bilaspur, Chhattisgarh, operating 57 coal mines in Chhattisgarh and Madhya Pradesh.