LSS

LSS may refer to:

Companies

 * LSS Data Systems, a medical software company
 * Lone Star Steel Company, a tubular steel mill in Lone Star, Texas

Schools

 * Lakeland School System, school district in Lakeland, Tennessee
 * Laurel Springs School, Ojai, California, United States
 * Lawrence Sheriff School, Rugby, Warwickshire
 * Langstaff Secondary School, Richmond Hill, Ontario
 * London School of Sound, school of music production based in London, United Kingdom

Other organizations

 * Law Society of Saskatchewan
 * Leicester Secular Society, the world's oldest Secular Society
 * Life Saving Society
 * Lithic Studies Society
 * Lincoln Square Synagogue, Manhattan, New York City
 * Lunds Studentsångförening, a Swedish male-voice choir

Science and technology

 * Large-scale structure of the universe
 * Large Space Simulator, Space simulator
 * Life Span Study of atomic bomb survivors, see Epidemiology data for low-linear energy transfer radiation
 * Linhard–Scharff–Schiøt theory in ion physics
 * LSS (gene), an enzyme
 * LSS (Lynxmotion Smart Servo), a series of hobbyist-grade smart actuators created by RobotShop Inc.
 * Landing Ship Stern Chute, a converted train ferry used early in WW2 as Dock landing ship
 * Lumbar spinal stenosis, a medical condition in which the spinal canal narrows
 * XM26 Lightweight Shotgun System

Other uses

 * L. S. Sheshagiri Rao, Indian writer and scholar of Kannada literature
 * Lean Six Sigma, a synergized managerial concept of Lean manufacturing and Six Sigma
 * Licentiate of Sacred Scripture, see Licentiate of Sacred Theology
 * Logistics Support System
 * Lone Star Showdown, the official rivalry between the Texas A&M Aggies and the Texas Longhorns
 * LSS (Last Song Syndrome), a 2019 Philippine film