WZ

WZ may refer to:

• WZ sex-determination system, also known as the ZW sex-determination system
• WZ theory, a technique for simplifying certain combinatorial summations in mathematics
• Eswatini (FIPS 10-4 country code WZ)
• Westdeutsche Zeitung, a German newspaper
• Wetzlar, Germany
• WinZip, a computer file compression software
• Wizet, a Korean online gaming developer, which uses the file extension
• W and Z bosons in particle physics