| Acronym | Definition |
|---|
| SSS | Selective Service System (US government) |
| SSS | Side Side Side (geometry) |
| SSS | Student Support Services |
| SSS | Social Security System (Philippines) |
| SSS | Sunshine State Standards (Florida) |
| SSS | School of Social Sciences |
| SSS | Stabilization, Safety and Security of Distributed Systems (Symposium) |
| SSS | Same-Store Sales |
| SSS | Short Sea Shipping |
| SSS | Sea Surface Salinity |
| SSS | Subsurface Scattering |
| SSS | Securities Settlement System |
| SSS | Sick Sinus Syndrome |
| SSS | Senior Secondary School |
| SSS | Skin So Soft (Avon) |
| SSS | Side Scan Sonar |
| SSS | Scalded Skin Syndrome |
| SSS | Simplified Spelling Society |
| SSS | Sigue Sigue Sputnik |
| SSS | Scotopic Sensitivity Syndrome (visual perceptual disorder; aka Meares-Irlen syndrome) |
| SSS | Southern Sociological Society |
| SSS | Spread Spectrum Scene |
| SSS | Scandinavian Stroke Scale (medicine) |
| SSS | Sea Scout Ship |
| SSS | Super Steady Shot (Sony camcorder function) |
| SSS | System/Subsystem Specification |
| SSS | System Safety Society |
| SSS | Surround Sound System |
| SSS | Server-Side Scripting |
| SSS | Salvo Siempre Salvo |
| SSS | Congregation of the Blessed Sacrament (religious order) |
| SSS | Symptom Severity Score |
| SSS | System Segment Specification |
| SSS | Standard Supply Service |
| SSS | Soccer Specific Stadium |
| SSS | Shoot, Shovel and Shut Up |
| SSS | Sinusoidal Steady-State |
| SSS | Safety-critical Systems Symposium |
| SSS | Swiss Speleological Society |
| SSS | Student Self Service |
| SSS | Singlehanded Sailing Society |
| SSS | System Support Services |
| SSS | Saffir-Simpson Scale (hurricane classification) |
| SSS | Staff Summary Sheet (US DoD) |
| SSS | Society for Slovene Studies |
| SSS | Sybase SQL Server |
| SSS | Super Sport Sedan (Datsun car model suffix) |
| SSS | Senior Service School |
| SSS | Storage Security and Survivability |
| SSS | Small Shelter System |
| SSS | Strike Support Ship |
| SSS | Sorry So Sloppy |
| SSS | Single Shelter Switch |
| SSS | Sea, Sex, and Sun |
| SSS | Standard Service Supply |
| SSS | Second Skin Satin (Victoria's Secret) |
| SSS | Software Support Specialist |
| SSS | Sorry So Short |
| SSS | Suspended Substrate Stripline |
| SSS | Self Service Support |
| SSS | Subscriber Service System (Shasta Networks) |
| SSS | super soul sister |
| SSS | Su Seguro Servidor (Spanish letter-writing protocol) |
| SSS | Safety and Security Service (United Nations) |
| SSS | Signature Security Service |
| SSS | Suncoast Seabird Sanctuary (Florida, USA) |
| SSS | Specific Soluble Substance |
| SSS | State School Superintendent |
| SSS | Safety Shutdown System |
| SSS | Sentrale Senuweestelsel |
| SSS | Students Supporting Students |
| SSS | Société Suisse de Surveillance Économique |
| SSS | Source Selection Sensitive |
| SSS | Safe Shutdown System |
| SSS | Satellite Surveillance System |
| SSS | Shingles Support Society (London, England) |
| SSS | Steady State Stability (power generation) |
| SSS | Sea Surface Search |
| SSS | Strategic Deterrent Forces (Russia) |
| SSS | Satellite Servicer System |
| SSS | Scout Sniper School |
| SSS | Shared Sourcing Services |
| SSS | Speed Scientific School (University of Louisville) |
| SSS | Social Services Syndrome |
| SSS | Strategic Storage Site |
| SSS | Strafe Scoring System |
| SSS | Symbolic Shorthand System (for Physiology and Medicine) |
| SSS | Secondary Sampling System |
| SSS | Supplementary Safety System |
| SSS | Special Security Squadron |
| SSS | Site Safety Services (UK) |
| SSS | Solutions Sales Specialist |
| SSS | Strategic Sealift Ships |
| SSS | Survivable Storage System |
| SSS | South Side Stockton (Stockton, California criminal street gang) |
| SSS | Special Safeguards Study |
| SSS | Shipbuilder Special Study |
| SSS | Start Stop Sequencing |
| SSS | Sentinel Secondary School |
| SSS | Single Coil-Single Coil-Single Coil (electric guitars, pickup configuration) |
| SSS | Support Service Subcontractor |
| SSS | Ship to Shore to Ship |
| SSS | Security Support Squadron |
| SSS | Source Selection Survey |
| SSS | S. Siedle und Söhne, Stiftung & Co (German home security manufacturer) |
| SSS | Sensitized Stainless Steel |
| SSS | Spin Sun Sensor |
| SSS | Space-to-Space Subsystem |
| SSS | Southern Satellite Systems |
| SSS | Sapper Squad Set |
| SSS | Site Security Supervisor |
| SSS | Standard Software/Supply System |
| SSS | Science, Society and Solutions (US Geological Survey) |
| SSS | Shield and Seismic Support |
| SSS | Scandinavian Sanitary Systems (now International Sanitary System) |
| SSS | Siedle Security Systems |
| SSS | Stellent Site Studio (Web content management application) |
| SSS | Seismically Qualified Shutdown System |
| SSS | Springbrook State School (Gold Coast, Australia) |
| SSS | Silkwood Steiner School (Gold Coast, Australia) |
| SSS | Storage Serviceability Standard |
| SSS | Short Secret Sharing (algorithm) |
| SSS | SONET Surveillance System (Sprint) |
| SSS | Software Subsystem Specification |
| SSS | Soviet Secret Service |
| SSS | Standardized Scheduling System |
| SSS | Station Shift Supervisor |
| SSS | Stellar Sensor System |
| SSS | Seismic Sensor Subsystem |
| SSS | Single Support Strategy |
| SSS | Subscriber Switching System |
| SSS | Supersonic Sea Skimmer |
| SSS | Survivable Satellite System |
| SSS | Secondary Shift Selector |
| SSS | Steer Solenoid Status |
| SSS | Stuff, Shower & Shave (polite form) |
| SSS | Small Ship Server |
| SSS | Southport State School (Queensland, Australia) |
| SSS | Smart Sensory System |
| SSS | Subscriber Selection Switching |
| SSS | Strict Sense Stationary Source |
| SSS | Sudler Silver Scroll |
| SSS | Shaw Savill Society |
| SSS | Suitability/Supportability Statement |
| SSS | Stone Soup Symphony (Hackettstown, NJ) |
| SSS | Symmetric Storage Systems (EMC) |
| SSS | Self-Shrinking Sequence |
| SSS | Southport Special School (Queensland, Australia) |
| SSS | Sinclair Secondary School (Whitby, ON, Canada) |
| SSS | Slope Soaring Simulator |