The Wonderful Wizard of Oz, a 1900 book by L. Frank Baum
The Wizard of Oz (1939 film), most notable adaptation;
See The Wizard of Oz (adaptations) for all other adaptations;
Wizard (Oz), the character;
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Other meanings:
Ozzie Smith, the acrobatic St. Louis Cardinals shortstop of the 1980s known as the Wizard of Oz;
Wizard of Oz experiment, in human-computer interaction, a type of experimental setup;
Wizard of Ahhhs, a 2007 EP by indie rock band Black Kids;