The Wonderful Wizard of Oz has been adapted to other media numerous times, most famously in The Wizard of Oz, the 1939 film starring Judy Garland, Ray Bolger, Jack Haley, and Bert Lahr. Until this version, the book had inspired a number of now less well known stage and screen adaptations, including a profitable 1902 Broadway musical and three silent films. The 1939 film was considered innovative because of its songs, special effects, and revolutionary use of the new Technicolor.
The story has been translated into other languages (at least once without permission) and adapted into comics several times. Following the lapse of the original copyright, the characters have been adapted and reused in spin-offs, unofficial sequels, and reinterpretations, some of which have been controversial in their treatment of Baum's characters.