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Lorne Greene as Grandfather (voice) |
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Sammy Davis Jr. as Head Ratte (voice) |
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Margery Grey as Heidi (voice) |
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Pamelyn Ferdin as Klara (voice) |
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Michael Bell as Willie (voice) |
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Peter Cullen as Gruffle (voice) |
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Roger DeWitt as Peter (voice) |
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Richard Erdman as Herr Sessman (voice) |
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Fritz Feld as Sebastian (voice) |
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Joan Gerber as Fräulein Rottenmeier (voice) |
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Virginia Gregg as Aunt Dete (voice) |
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Janet Waldo as Tinette (voice) |
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Frank Welker as Schnoddle/Hootie (voice) |
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Michael Winslow as Mountain (voice) |
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Sue Allen as Chorus (voice) |
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B.J. Baker as Chorus (voice) |
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John Richard Bolks as Chorus (voice) |
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Evangeline Carmichael as Chorus (voice) |
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Bill Cole as Chorus (voice) |
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Paul DeKorte as Chorus (voice) |
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Sandie Hall as Chorus (voice) |
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Walter S. Harrah as Chorus (voice) |
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Ronald Harris as Chorus (voice) |
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Darlene Lawrence as Chorus (voice) |
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Douglas Lawrence as Chorus (voice) |
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Shara Lee Lucas as Chorus (voice) |
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Ida Sue McCune as Chorus (voice) |
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Gene Merlino as Chorus (voice) |
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Loulie Jean Norman as Chorus (voice) |
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Marilyn Powell as Chorus (voice) |
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Paul Sandberg as Chorus (voice) |
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Robert Tebow as Chorus (voice) |
| Directing | Robert Taylor | Director |
| Art | Dennis Venizelos | Background Designer |
| Visual Effects | Rick Maki | Animation |
| Sound | Hoyt Curtin | Original Music Composer |
| Writing | Jameson Brewer | Writer |
| Writing | Joseph Barbera | Writer |
| Writing | Robert Taylor | Writer |
| Writing | Johanna Spyri | Novel |
| Visual Effects | Hal Ambro | Animation Director |
| Visual Effects | Chuck Downs | Animation Director |
| Visual Effects | Bob Bachman | Animation |
| Visual Effects | Ed Barge | Animation |
| Visual Effects | Jesse Cosio | Animation |
| Visual Effects | John Freeman | Animation |
| Visual Effects | Ernesto Lopez | Animation |
| Visual Effects | Duncan Marjoribanks | Animation |
| Visual Effects | Mauro Maressa | Animation |
| Visual Effects | Sean Newton | Animation |
| Visual Effects | Margaret Nichols | Animation |
| Visual Effects | Spencer Peel | Animation |
| Visual Effects | Manuel Perez | Animation |
| Visual Effects | Mitch Rochon | Animation |
| Visual Effects | George Scribner | Animation |
| Visual Effects | Irven Spence | Animation |
| Visual Effects | Robert Taylor | Animation |
| Visual Effects | John Walker | Animation |
| Visual Effects | Ken Walker | Animation |
| Visual Effects | Edwin Aardal | Animation |
| Visual Effects | Roger Chiasson | Animation |
| Visual Effects | Gail Finkeldei | Animation |
| Visual Effects | Alvaro Gaivoto | Animation |
| Visual Effects | Terry Harrison | Animation |
| Visual Effects | Harry Holt | Animation |
| Visual Effects | John Kimball | Animation |
| Visual Effects | Marlene Robinson May | Animation |
| Visual Effects | Glenn Schmitz | Animation |
| Visual Effects | Martin Taras | Animation |
| Visual Effects | Don Williams | Animation |
| Visual Effects | Xenia | Animation |
