The acronym SST may refer to:in aircraft and naval vehicles Supersonic transport (SST), civil aircraft for transporting passengers faster than the speed of sound. US Navy hull classification symbol for Training Submarines Scaled Composites SpaceShipTwo in popular culture and media SST Records, an independent record label Sega Sound Team, a Japanese music band. Starship Troopers, a science fiction book by Robert A. Heinlein Starship Troopers (film), a film loosely based on the book by Rober… (More on Sst)