Led Zeppelin, a rock music group

The IATA code for Balkan Bulgarian Airlines

Landing Zone, an avionic or military term

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