SST

The acronym SST may refer to:

In aircraft and naval vehicles

• Scaled Composites SpaceShipTwo
• SST class blimp SS class blimp
• Supersonic transport (SST), civil aircraft for transporting passengers faster than the speed of sound.
• US Navy hull classification symbol for Training Submarines

In ballistics

• Hornady SST (Super Shock Tip) bullet - streamlined, polymer tip

In government and military

• Special Security Team, a counter-terrorist unit of the Japanese Coast Guard
• Streamlined Sales Tax Project, an effort to standardize the way states in the United States tax goods
• Swiss Solvency Test, a framework for the regulation of the insurance industry in Switzerland
• Safe Secure Trailer, a modified 18-wheel cargo truck used by the United States Office of Secure Transportation to move specialized cargoes, such as nuclear weapons

In popular culture and media

• Salo-Salo Together ("SST"), a defunct Philippine noontime variety show aired over GMA Network from 1993 to 1995.
• The Samoan Swat Team ("The Headshrinkers"), a professional wrestling tag team
• Sega Superstars Tennis, a 2008 video game featuring Sega's mascots playing tennis
• SST Band ("Sega Sound Team"), a Japanese music band
• SST Records, an independent record label
• Starship Traders, a multiplayer webgame
• Starship Troopers, a science fiction book by Robert A. Heinlein
• Starship Troopers (film), a film loosely based on the book by Robert A. Heinlein of the same name

In science and technology

• Menter’s Shear Stress Transport, turbulence model in fluid dynamics
• Mitsubishi SST, a concept car by Mitsubishi
• School of Science and Technology, a magnet program within Merlo Station High School with emphasis on the sciences and technology
• School of Science and Technology, Singapore, a Specialised Independent School in Singapore
• Sea surface temperature
• Serum-separating tube, a particular type of evacuated tube used during venipuncture.
• Shiva Smart Tunneling, a simple VPN tunneling protocol in Eicon Shiva series VPN gateway products
• Shortest spanning tree, in graph theory
• Silicon Storage Technology, Inc, a manufacturer of flash parts
• Social skills training, in educational psychology training students with special needs (like autism) social skills to help with inclusion.
• Somatostatin, a peptide hormone
• Space Surveillance Telescope, ground-based space surveillance technology developed by DARPA
• Spitzer Space Telescope, a space observatory observing in the infrared launched in 2003
• Steady state topography, a research methodology in cognitive neuroscience and neuromarketing
• Structured Stream Transport, a data transport protocol still under development by MIT
• Swedish Solar Telescope (Swedish 1-m Solar Telescope), a telescope dedicated to observing the Sun
• Total sum of squares, SST or TSS
• Twin Clutch SST, a twin-clutch transmission developed by Mitsubishi

In time

• Samoa Standard Time (Samoa Time Zone)
• Singapore Standard Time