BZ may refer to:
bzip2 is a free and open-source file compression program that uses the Burrows–Wheeler algorithm. It only compresses single files and is not a file archiver.
BZ20 is the fifth studio album by Irish boy band Boyzone, released on 22 November 2013 by Rhino Records.
BZFlag (an abbreviation for Battle Zone capture the Flag) is a free and open-source, multiplayer online, tank game.
The BZ20 Tour was a tour by Irish boy band Boyzone, celebrating the band's 20 years of existence. It included dates in England, Scotland, Singapore, Indonesia, Thailand and the Philippines.
BZN (Band Zonder Naam; Dutch for "Band Without Name") was a successful Dutch pop group that had a string of hits from 1966 to 2007 on.
The Bzyb (; Georgian: ბზიფი; Abkhazian: Бзыҧ, romanized: Bzyp; Russian: Бзыбь, romanized: Bzybj) is one of the two largest rivers of Abkhazia, along with the Kodori and the twelfth longest river in Georgia.
The Bzhedug dialect (Adyghe: Бжъэдыгъубзэ) is a dialect of Adyghe. The Bzhedug dialect is spoken by the Bzhedugs who live mostly in Adygea and Biga.
The Basic Leucine Zipper Domain (bZIP domain) is found in many DNA binding eukaryotic proteins. One part of the domain contains a region that mediates sequence specific DNA binding properties and the leucine zipper that is required to hold together (dimerize) two DNA binding regions.