LSST may refer to: * Large Synoptic Survey Telescope, former name of the Vera C. Rubin Observatory astronomical observatory in Chile ** Legacy Survey of Space and Time, an astronomical survey performed at the Vera C. Rubin Observatory * Lowstand systems tract, a type of sedimentary deposit in sequence stratigraphy * The Priory Academy LSST, formerly ''Lincoln School of Science and Technology'', a school in Lincolnshire, England, UK * Legal Services Support Team, units of the United States Marine Corps Judge Advocate Division

See also