ZW
# ZW

ZW or zw may refer to:

* ZW sex-determination system, chromosomal in birds and some species of reptile, fish, and insect
   * ZW, heterogametic female designation under this system
* Air Wisconsin (IATA airline designator), a US airline
* Zettawatt (ZW), an SI unit of power
* Zimbabwe (ISO 3166-1 alpha-2 country code ZW)
   * .zw, the country code top level domain (ccTLD) for Zimbabwe
* Zulte-Waregem, Belgian association football club
