When a nasty neighbor tries to have her dog put to sleep, Dorothy takes her dog Toto, to run away. A cyclone appears and carries her to the magical land of Oz. Wishing to return, she begins to travel to the Emerald City where a great wizard lives. On her way she meets a Scarecrow who needs a brain, a Tin Man who wants a heart, and a Cowardly Lion who desperately needs courage. They all hope the Wizard of Oz will help them, before the Wicked Witch of the West catches up with them.
Adventure | Family | Fantasy | Musical
| Judy Garland | … | Dorothy Gale | |
| Frank Morgan | … | Professor Marvel / The Gatekeeper / The Carriage Driver / The Doorman / The Wizard of Oz | |
| Ray Bolger | … | Hunk / The Scarecrow | |
| Bert Lahr | … | Zeke / The Cowardly Lion | |
| Jack Haley | … | Hickory / The Tin Man | |
| Billie Burke | … | Glinda | |
| Margaret Hamilton | … | Almira Gulch / The Wicked Witch of the West / The Wicked Witch of the East | |
| Charley Grapewin | … | Uncle Henry | |
| Pat Walshe | … | Nikko | |
| Clara Blandick | … | Auntie Em | |
| Terry | … | Toto (as Toto) | |
| The Singer Midgets | … | The Munchkins (also as The Munchkins) |