| Acronym | Definition |
|---|
| SST | Sea Surface Temperature |
| SST | Stainless Steel |
| SST | Solid State Technology |
| SST | Supersonic Transport |
| SST | Silicon Storage Technology Inc. (manufacturer of memory chips; Sunnyvale, CA, USA) |
| SST | Somatostatin |
| SST | Shipboard (Weapon) Suitability Test |
| SST | Sunday Star-Times (New Zealand newspaper) |
| SST | Student Support Team |
| SST | System Service Tools |
| SST | Student Study Team (California) |
| SST | Spitzer Space Telescope (formerly Space Infrared Telescope Facility; NASA) |
| SST | School of Science and Technology |
| SST | Serum Separator Tube (blood specimen collection) |
| SST | Sport Shift Transmission (Mitsubishi-Motors) |
| SST | Surface Skin Temperature |
| SST | Self Service Terminal (another name for ATM) |
| SST | Spread-Spectrum Technology |
| SST | Spread Spectrum Technology |
| SST | State Support Team (Ohio educational support agency) |
| SST | Satellite-to-Satellite Tracking |
| SST | Shear Stress Transport (turbulence modeling aeronautics) |
| SST | Self Supporting Tire (Run-Flat Tire) |
| SST | Single-Shell Tanks |
| SST | Short Synacthen Test |
| SST | Special Service Tool |
| SST | Sport Specific Training (Burlington, ON, Canada) |
| SST | Sum of Squares Total |
| SST | Training Submarine (US Navy ship designation) |
| SST | Simple SIPP Transition |
| SST | Spectroscopic Survey Telescope |
| SST | South Sumatra Time (GMT+0700) |
| SST | Safe Secure Transport |
| SST | Security Services and Technologies |
| SST | Secondary School Teacher |
| SST | Satuan Sambungan Telepon (Indonesian: fixed telephone line) |
| SST | Scholarship Selection Test |
| SST | Saturated Suction Temperature |
| SST | Sears Smart Toolbox |
| SST | Safe Secure Trailer |
| SST | Scheduled Start Time |
| SST | Solid State Transmitter |
| SST | Solid State Transformer |
| SST | Shiva Smart Tunneling |
| SST | Synchronous Service Transport (US West) |
| SST | Space Surveillance Telescope (DARPA research program) |
| SST | Sweet Smelling Toilet (campground pit latrines and outhouses) |
| SST | Stereotactic Subcaudate Tractotomy (psychosurgery to treat depression) |
| SST | Site-Specific Training (radiation) |
| SST | Self-Similar Traffic |
| SST | Statistical Software Testing |
| SST | System Support Team |
| SST | Subsystem Status Test (ANSI) |
| SST | Single Spanning Tree (protocol) |
| SST | Summer School Teacher |
| SST | Solar Space Telescope |
| SST | Site Survey Team |
| SST | Spin-Steer Technology (John Deere) |
| SST | Strategic Support Team |
| SST | Solid State Tuners (American Independent Record Label) |
| SST | Self-Sufficiency Trust |
| SST | Station Service Transformer |
| SST | Session Start Time |
| SST | Supersonic Target |
| SST | Send Special Information Tone Signal (CCS #7 & ITU-T) |
| SST | Single Sideband Transmitter |
| SST | Secondary Service State (DSC) |
| SST | Supervisor Safety Training |
| SST | Single Subscriber Terminal |
| SST | Simultaneous Self-Test (computing) |
| SST | Steady-State Thermodynamics |
| SST | Software Technology Incorporated |
| SST | Spacecraft Systems Test |
| SST | Super Serial Technology |
| SST | System Stress Test |
| SST | Satellite Servicing Technology |
| SST | School Student Transaction |
| SST | Signaling Service Type |
| SST | Social Shaping Technology |
| SST | Scowling Street Terror |
| SST | Sustained Stewardship TeraFLOP |
| SST | Seattle Skeet and Trap (club) |
| SST | Scaleable, Stackable Technology (Intel) |
| SST | Sanitary Stainless Tubing |
| SST | Short Supervisory Transition (NSSSOG) |
| SST | Senior Surveillance Technician (AWACS surveillance position; replaced AAST) |
| SST | System Software Test |
| SST | Subscriber-Transferred Signal |
| SST | Synthesis of Simulation Technologies (Computer-Aided Engineering) |
| SST | Short Suit Total (bridge game) |
| SST | Ship Surveillance and Targeting |
| SST | Special Surveillance Team |
| SST | Super Sports Touring (AMC cars) |
| SST | Surgical/Scrub Technician |
| SST | System Subsystem Test |
| SST | Stealth Strike Team |
| SST | Serial Scan Test |
| SST | Serata Stress Technology |
| SST | Single-Sided Tomography |
| SST | Sender Short Timing |
| SST | Simple System Test |
| SST | Signature Sequence Type |
| SST | Socioemotional Selective Theory |
| SST | Surface Science Technique |
| SST | Sponsored Search Term |
| SST | Sustained Stockpile TeraFLOP |
| SST | Switch System Testing (Sprint) |
| SST | Service Specification Template (US Department of Defense Net-Centric Architecture) |
| SST | Shape Shifting Trie (longest matching prefix lookup) |
| SST | Scalable Spanning Tree |
| SST | Short Subject Training |