GZ or gz may refer to:
Gary Grice (born August 22, 1966), better known by his stage names GZA (/ˈdʒɪzə/ JIZ-ə) and The Genius, is an American rapper and songwriter.
Gzim Selmani (born June 16, 1994) is an Albanian professional wrestler and former mixed martial artist.
gzip is a file format and a software application used for file compression and decompression. The program was created by Jean-loup Gailly and Mark Adler as a free software replacement for the compress program used in early Unix systems, and intended for use by GNU (the "g" is from "GNU").
Granzyme A is a protein that in humans is encoded by the GZMA gene, and is one of the five granzymes encoded in the human genome .
The GZ convoys were a series of Caribbean convoys which ran during the Battle of the Atlantic in World War II.
Granzyme H is a protein that in humans is encoded by the GZMH gene.
Granzyme K is a protein that in humans is encoded by the GZMK gene.