LZ may refer to:
Elizabeth Mae "Lzzy" Hale (born October 10, 1983) is an American singer, songwriter, and musician. She is best known as the lead singer and rhythm guitarist of the American hard rock band Halestorm, which she co-founded in 1997.
LZ77 and LZ78 are the two lossless data compression algorithms published in papers by Abraham Lempel and Jacob Ziv in 1977 and 1978. They are also known as LZ1 and LZ2 respectively.
LZ7 are a Christian electronic dance music group from Manchester. The band was formed in 2005 by Lindz West, a member of dance band The Tribe, who had split up the previous year.
Elzie Lee "LZ" Granderson (born March 11, 1972) is an American journalist, a contributor at ABC News and a columnist for ESPN.
LZ4 is a lossless data compression algorithm that is focused on compression and decompression speed. It belongs to the LZ77 family of byte-oriented compression schemes.