| Cast list | | Tallulah Bankhead | as | The Sea Witch (voice) | | Victor Borge | as | Zenith (The Second Tailor) (voice) | | Patty Duke | as | Thumbelina (voice) | | Jack Gilford | as | Papa Andersen | | Sessue Hayakawa | as | The Mole (voice) | | Margaret Hamilton | as | Mrs. Klopplebobbler | | Burl Ives | as | Father Neptune (voice) | | Boris Karloff | as | The Rat (voice) | | Hayley Mills | as | The Little Mermaid (voice) | | Paul O'Keefe | as | Chris | | Cyril Ritchard | as | The Sandman (voice) | | Terry-Thomas | as | Brig. Zachary Zilch (The First Tailor) (voice) | | Ed Wynn | as | The Emperor (voice) | | Ray Bolger | as | The Pieman | | Robert Harter | as | Big Claus |
| | Crew list: | | Jules Bass (Director) | | Hans Christian Andersen (Writer) | | Romeo Muller (Writer) |
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