LZ

LZ may refer to:

Computing

 * .lz, a filename extension for an lzip archive
 * Abraham Lempel (born 1936) and Jacob Ziv (born 1931), Israeli computer scientists:
 * Lempel-Ziv, prefix for family of data compression algorithms, sometimes used as beginning for file name extensions
 * Lempel–Ziv–Markov chain algorithm

Aviation

 * Republic of Bulgaria (aviation code)
 * Air Link IATA code
 * Balkan Bulgarian Airlines IATA code (1947-2002)
 * Swiss Global Air Lines IATA code (2005-2018)
 * Landing zone, an area where aircraft can land
 * LZ-, prefix of the serial numbers of Zeppelin airships built by Ferdinand von Zeppelin

Other uses

 * LUX-ZEPLIN, a dark matter detection experiment
 * Lubrizol, a chemical manufacturer (NYSE symbol LZ)
 * Lutz jump, a figure skating jump
 * Led Zeppelin, an English rock band