Qux or variation, may refer to:
qux
), a South American languageQUAixX
), a Canadian mining companyQUX
), Tibet, China; see List of administrative divisions of the Tibet Autonomous Regionqux
(computer science), a commonly defined metasyntactic variableQux
(programming), a common placeholder nameQUX
(radiotelegraphy), a Q-code encoding the phrase Do you have any navigational warnings or gale warnings in force?