SSSS

SSSS can refer to:
* Scandinavian Simvastatin Survival study was one of the earliest studies on the effect of lowering human plasma cholesterol by pharmacological means
* Secondary Security Screening Selection, a code used by airlines on boarding cards of passengers selected for secondary security screening
* In Representational State Transfer, Server Side Session State, in contrast to CSSS (Client Side Session State)
* Society for Social Studies of Science, a professional organization more commonly abbreviated 4S
* Society for the Scientific Study of Sexuality an acronym
* In dermatology and neonatology, Staphylococcal scalded skin syndrome, a severe exfoliative skin reaction caused by a Staphylococcus aureus exotoxin
* "Superhuman Samurai Syber-Squad", a children's television show based on "Denkou Choujin Gridman"
* Sontaran Special Space Service, an elite military organization, considered by Dr. Who to be "carrying alliteration a little far." [http://www.imdb.com/title/tt0056751/quotes]
* For its use as a Serbian political slogan, see CCCC (disambiguation)
* The letters written by airline employees on airline boarding passes to signal TSA to perform an expanded security screen.
* Selective Sound Sensitivity Syndrome, a type of misophonia.