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 .wZ
 * W and Z bosons in particle physics