LSI

LSI may mean:

  • LSI Corporation, a technology company founded in 1981
  • LSI-11, an early large-scale integration computer processor that implemented the DEC PDP-11 instruction set
  • "LSI (Love Sex Intelligence)", a single by The Shamen
  • Lynch Syndrome International, non-profit organisation supporting those affected by Lynch Syndrome
  • Labour and Socialist International, a former socialist international
  • Lake Superior and Ishpeming Railroad, a railroad service in Michigan, U.S.
  • Landing Ship, Infantry, a type of troopship or post WWII a landing craft
  • Langelier Saturation Index, a measure for water's tendency to form scale
  • Large Scale Integration, integrated circuits with tens of thousands of transistors
  • La Salle Institute, a college preparatory school
  • Latent semantic indexing, a technique in natural language processing
  • Lear Siegler Inc., a technology company active from 1961-2002
  • Lëvizja Socialiste për Integrim, an Albanian political party
  • Linear shift-invariant systems, the discrete equivalent of linear time-invariant systems
  • Linguistic Survey of India, a survey of the languages of British India directed by G.A. Grierson
  • Logical Sensory Introvert, a socionics type
  • Long string instrument, a musical instrument
  • Lord Steel Industry, a manufacturer of stainless steel tubing and piping
  • LSI, the IATA airport code for Sumburgh Airport in Shetland, Scotland