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.
Elzie Lee "LZ" Granderson (born March 11, 1972) is an American journalist and commentator for CNN and ESPN.
LZ7 are a Christian hip hop and dance 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.