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Audrey Hepburn as Sister Luke |
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Peter Finch as Dr. Fortunati |
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Edith Evans as Rev. Mother Emmanuel |
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Peggy Ashcroft as Mother Mathilde |
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Dean Jagger as Dr. Hubert Van Der Mal |
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Mildred Dunnock as Sister Margharita |
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Beatrice Straight as Mother Christophe |
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Patricia Collinge as Sister William |
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Rosalie Crutchley as Sister Eleanor |
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Ruth White as Mother Marcella |
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Barbara O'Neil as Mother Didyma |
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Margaret Phillips as Sister Pauline |
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Patricia Bosworth as Simone |
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Colleen Dewhurst as Dangerous Hospital Patient |
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Stephen Murray as Chaplain |
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Lionel Jeffries as Dr. Goovaerts |
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Niall MacGinnis as Father Vermeuhlen |
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Eva Kotthaus as Sister Marie |
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Molly Urquhart as Sister Augustine |
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Dorothy Alison as Sister Aurelie |
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Jeanette Sterke as Louise |
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Errol John as Illunga |
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Diana Lambert as Lisa |
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Orlando Martins as Kalulu |
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Penelope Horner as Jeanette Milonet (uncredited) |
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Charles Lamb as Pascin (uncredited) |
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Ave Ninchi as Sister Bernard (uncredited) |
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Richard O'Sullivan as Pierre (uncredited) |
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Frank Singuineau as Murderer of Sister Aurelie (uncredited) |
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Elsa Albani as (uncredited) |
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Gabriella Andreini as (uncredited) |
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Juan Aymerich as (uncredited) |
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Grazia De Rossi as (uncredited) |
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Giovanna Galletti as (uncredited) |
| Directing | Fred Zinnemann | Director |
| Writing | Robert Anderson | Screenplay |
| Writing | Kathryn C. Hulme | Novel |
| Crew | Stanley Browne | Technical Advisor |
| Crew | Marie-Louise Habets | Technical Advisor |
| Production | Fred Zinnemann | Producer |
| Production | Henry Blanke | Producer |
| Sound | Franz Waxman | Original Music Composer |
| Camera | Franz Planer | Director of Photography |
| Art | Alexandre Trauner | Art Direction |
| Editing | Walter Thompson | Editor |
| Art | Maurice Barnathan | Set Decoration |
| Costume & Make-Up | Marjorie Best | Costume Design |
| Costume & Make-Up | Grazia De Rossi | Hairstylist |
| Costume & Make-Up | Alberto De Rossi | Makeup Artist |
| Production | Julien Derode | Production Manager |
| Production | Chuck Hansen | Production Manager |
| Production | Orazio Tassara | Production Manager |
| Directing | Bernard Vorhaus | Assistant Director |
| Directing | Sergio Leone | Assistant Director |
| Art | Italo Tomassi | Art Department Manager |
| Sound | Oliver S. Garretson | Sound |
| Crew | Robert J. Miller | Sound Recordist |
| Camera | Goffredo Bellisario | Camera Operator |
| Camera | Léo L. Fuchs | Still Photographer |
| Production | Christian Ferry | Location Manager |
| Directing | Elaine Schreyeck | Script Supervisor |
| Crew | Sam Zebba | Second Unit |
| Sound | Franz Waxman | Conductor |
