CZ (and variants) is an abbreviation that can mean:Mitochondrial DNA
Haplogroup CZCubic zirconia, a common simulation
diamond,
ISO 3166 and obsolete
NATO digramČeskoslovenská Statni Zbrojovka Brno, a Czechoslovak firearms manufacturer and state arsenal
Česká Zbrojovka Uhersky Brod (ČZUB), a Czech firearms manufacturer
Česká Zbrojovka Strakonice, a Czech firearms and motorcycle manufacturer
CZ-USA US division of
Česká Zbrojovka Uhersky Brod, a Czech firearms manufacturer
China Southern Airlines (
IATA airline designator), an international airline based in Guangzhou, People's Republic of China, a 2004 computer game in the Counter-Strike series from Vivendi UniversalCasa Zimbabwe, a house of some fame in the
UC Berkeley University Students' Cooperative Association.
Citizendium, an online encyclopedia project.
C/Z Records, a record label.Claudio Zampolli's initials, when pronounced (in Italian) it sounds like
Cizeta.
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CZ, Czech Republic, country in central Europe (formerly part of Czechoslovakia)