SSS or Sss may refer to:
Places
- SSS islands, part of the Netherlands Antilles
- Sheerness-on-Sea railway station, Kent, England, National Rail station code
- Siassi's airport IATA code
- Southern Cross railway station (formerly Spencer Street), Melbourne, Australia, code
Businesses and organizations
- Sisters of Social Service, a Catholic religious institute founded in Hungary
- Societas Sanctissimi Sacramenti, the Congregation of the Blessed Sacrament
- Sovran Self Storage, US, NYSE SSS
- SSS Defence, an Indian firm
- Triple-S Management Corporation
Schools
- Serangoon Secondary School, a secondary school in Hougang, Singapore
- Sheffield Scientific School, formerly separate school of science and engineering at Yale College, Connecticut, until 1956
- Singapore Sports School, a specialised independent school in Woodlands, Singapore
- Smithers Secondary School, British Columbia, Canada
- Smithfield-Selma School, North Carolina, US
- Socialist Sunday School or Socialist School of Science, UK and US
Computing
- Shamir's Secret Sharing, an algorithm for dividing a secret into multiple pieces
- Single-serving site, a website composed of one page that serves one purpose
- Solid-state storage
- Substructure search, a method to retrieve from a database chemicals matching a given pattern of atoms and bonds
- Subsurface scattering, a mechanism of light transport in 3D graphics
- Super Scalable System, Cray-3/SSS massively parallel supercomputer project
- SSS*, a state-space search algorithm
Fiction
- SSS (Three-Speed), character in the anime series MADLAX
- Sport Searching School, the fictional school from Sport Ranger
Medicine
- Scotopic sensitivity syndrome, alternate term for Irlen syndrome, a visual disorder
- Sensation Seeking Scale, a psychological measurement
- Sick sinus syndrome, an abnormality of heart rhythm
- Subclavian steal syndrome, a medical condition arising from reversed blood flow
- Superior sagittal sinus, an anatomical structure in the skull which drains cerebrospinal fluid and venous blood
Music
- SSS International, a record label founded by Shelby Sumpter Singleton
- Sigue Sigue Sputnik, a British new wave band
- Short Sharp Shock (band), a crossover thrash band from Liverpool, UK
- SunSet Swish, a Japanese pop rock band
- Sisyphus (hip hop group), an American hip hop group formerly known as S / S / S
- Super Star Supporters, a fan club for SS501
- Solid State Survivor, a 1979 album by Yellow Magic Orchestra
- SweetSexySavage, a 2017 album by Kehlani
- "SSS", a song by The Avett Brothers from Mignonette
- "SSS", a song by Trickbaby from Hanging Around
- tripleS (or Social Sonyo Seoul), a 24-member K-pop girl group under MODHAUS
Science
- Sea surface salinity
- Sign Systems Studies, journal of semiotics
- Super Soft Source or Super soft X-ray source
- Omega baryon (Ω), with a quark content of sss
- Side-side-side, solution of triangles with 3 sides known
- Siding Spring Survey in astronomy
- similia similibus solventur – a general rule in chemistry meaning "like dissolves like"
Sports and entertainment
- Súper Sábado Sensacional, Venezuelan TV programme
- Super Special Stage in motor rallying
- Swedish Swing Society, a Swedish dance club
- Standard Scratch Score, a golf handicapping system
- SSS, the production code for the 1973 Doctor Who serial Planet of the Daleks
- Daniel Sturridge, Luis Suárez, and Raheem Sterling, Liverpool F.C.'s front three in the 2013–14 season
- Scarborough Shooting Stars, a professional basketball team in the Canadian Elite Basketball League
- Soccer-specific stadium, a sports stadium purpose-built for soccer
Government and politics
- Selective Service System, the United States' military conscription program
- Social security system
- State Security Service, Nigerian domestic intelligence agency
- Svensk Socialistisk Samling, Swedish Socialist Unity, former Swedish Nazi party
Linguistics
- Sign Supported Speech, a combination of sign language and English speech
- Sutton's Sign Symbol Sequence, now the International Movement Writing Alphabet, symbols to record movement
Other
- SATS Security Services at Singapore Changi Airport
- Senior Staff Sergeant, a rank in the Singapore Police Force
- Super SteadyShot, Sony image stabilization system
- Sonic Speed Simulator, a Roblox video game
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