XZ, X.Z., or xz may refer to:
Transportation AeroItalia (IATA code: XZ), an Italian airline South African Express SA Express (former IATA code: XZ), a former South African airline XZ, a type of PSA X automobile engine Yamaha XZ 550, a motorcycle
Computing xz, a lossless data compression file format based on the LZMA algorithm, often with the file extension ".xz" XZ Utils, a set of free lossless data compressors, including the xz command
Other uses Tibet Autonomous Region (Guobiao abbreviation: XZ), China
See also
XZ Tauri, a binary star system in the constellation Taurus Sony Xperia XZ, an Android smartphone