Oz can refer to:

• The Wonderful Wizard of Oz, a children's story written by L. Frank Baum
  • The Wizard of Oz, the title of various works derived from the books
  • Land of Oz, the fictional empire in the Oz books

• Oz (TV series), (from "Oswald") the title of a TV show on HBO set in a prison called "The Oswald state correctional facility"

• Oz (magazine), a satirical magazine published in Australia and Britain in the late 1960s and early 1970s

• Asiana Airlines, an abbreviation for the airline from the IATA standards body
• Australia, Oz (from "Australia") a colloquial term for the nation
• Gundam Wing, an organiazation in the anime series was named "Organization of Zodiac", abbreviated O.Z.
• Kevin Nash, a Professional wrestler
• OpenZaurus, a Linux distribution
• ounce, "oz." is an abbreviation for the unit of measure
• Oz, Isère is a commune in the Isère département in France
• Oz (Judge Dredd story), a Judge Dredd storyline in the UK comic, 2000 AD
• Oz programming language, a multi-paradigm computer programming language
• Wizard Of Oz (experiment), a technique for doing user-centered design or usability evaluations of software applications

The Oz surname may refer to:

• Daniel 'Oz' Osbourne, a fictional character in Buffy the Vampire Slayer
• Amos Oz, an Israeli author
• Frank Oz, (Richard Frank Oznowicz) a film director, actor and puppeteer noted for his work on the Muppets and Yoda

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