SST Records is an American independent record label formed in 1978 in Long Beach, California by musician Greg Ginn. The company was initially called Solid State Transmitters through which Ginn sold electronics equipment. Ginn repurposed the company as a record label to release material by his band Black Flag.

Music writer Michael Azerrad wrote, "Ginn took his label from a cash-strapped, cop-hassled store-front operation to easily the most influential and popular underground indie of the Eighties". SST initially focused on releasing material by hardcore punk groups from Southern California. As many of the bands on the label sought to expand beyond the limitations of the hardcore genre, SST released many key albums that were instrumental in the development of American alternative rock, including releases by the Minutemen, Hüsker Dü, the Meat Puppets, Sonic Youth, and Dinosaur Jr. After a peak release schedule in the late 1980s, SST began venturing into jazz releases. SST is now based in Taylor, Texas. Many former SST bands, including Sonic Youth and Dinosaur Jr, have sued to reclaim the rights to their material in later years.