Jennifer Edwards
— Heidi
Michael Redgrave
— Grandfather
Maximilian Schell
— Richard Sessemann
Jean Simmons
— Frl. Rottenmeier
Walter Slezak
— Father Richter
Peter van Eyck
— Dr. Bernd Reboux
Zuleika Robson
— Klara
John Moulder-Brown
— Peter
Elisabeth Neumann-Viertel
— Grandmother
Karl Lieffen
— Sebastian