LZ can stand for:
a Bulgarian pop/rock band, see LZ
The IATA code for Balkan Bulgarian Airlines
Landing Zone, an avionic or military term
Led Zeppelin, a rock music group
Lempel-Ziv, prefix for family of data compression algorithms (LZ77, LZ78, LZW), sometimes used as beginning for file name extensions (LZH)
Luftschiff ("Airship") Zeppelin (German), prefix of the serial numbers of the historic airships built by Ferdinand Graf Zeppelin in Friedrichshafen and elsewhere
Lubrizol, NYSE symbol of The Lubrizol Corporation
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