Trailer
 | Katy Kurtzman as Heidi |
 | Burl Ives as Grandfather |
 | Sean Marshall as Peter |
 | John Gavin as Dan Wyler |
 | Marlyn Mason as Mady |
 | Sherrie Wills as Elizabeth Wyler |
| Alex Henteloff as Chef Andre |
 | Charles Aidman as The Wild Man |
 | Walter Brooke as Cousin Tobias |
 | Amzie Strickland as Cousin Martha |
 | Molly Dodd as Mother Gertrude |
 | Adrienne Marden as Sister Agnes |
 | Arlen Stuart as Hotel Telephone Operator |
| Barry Cahill as Hotel Manager Krebbs |
 | Bartlett Robinson as Oscar the Butler |
 | Fred Lerner as Jacob |
| Lola Mason as Birgitte |
 | Buck Young as Jensen |
| Karl Ellis as Harold Sands |
| Kim Fowler as Marie (voice) |
| Sound | |
| Buz Kohan | Songs |
Directing | |
| Ralph Senensky | Director |
Writing | |
| Johanna Spyri | Novel |
| John McGreevey | Screenplay |
Production | |
| Pierre Cossette | Executive Producer |
| Charles B. Fitzsimons | Producer |
Camera | |
| John M. Nickolaus Jr. | Director of Photography |
Sound | |
| Buz Kohan | Music |
Writing | |
| Buz Kohan | Lyricist |
Art | |
| Michael Baugh | Production Design |
Editing | |
| Gene Fowler Jr. | Editor |
Sound | |
| Allyn Ferguson | Orchestrator |
| Allyn Ferguson | Conductor |
Directing | |
| Barbara Bass | First Assistant Director |
| Terry Crogan | Second Assistant Director |
Production | |
| Jim Merrick | Casting |
| Maureen Osborne-Beall | Production Coordinator |
| Dee Brantlinger | Producer's Assistant |
Art | |
| Hub Braden | Set Decoration |
| Terry Ballard | Property Master |
Directing | |
| Irving H. Cooper | Script Supervisor |
Art | |
| Patricia Van Ryker | Assistant Production Design |
Sound | |
| Dean Hodges | Sound Mixer |
Camera | |
| Joel King | Camera Operator |
Lighting | |
| Robert Chaldu | Gaffer |
Camera | |
| Larry J. Aube | Key Grip |
Costume & Make-Up | |
| Kathleen McCandless | Costumer |
Production | |
| F.A. Miller | Unit Production Manager |
