 | Anita Ekberg als Sister Gertrude |
 | Joe Dallesandro als Dr. Patrick Roland |
 | Alida Valli als Mother Superior |
 | Massimo Serato als Dr. Poirret |
 | Daniele Dublino als Director |
 | Paola Morra als Sister Mathieu |
 | Lou Castel als Peter |
 | Laura Nucci als Baroness |
 | Alice Gherardi als Nurse |
 | Lee De Barriault |
| Ileana Fraia als Florence |
| Antonietta Patriarca |
 | Sofia Lusy als Janet |
 | Nerina Montagnani als Josephine |
| Franco Caracciolo als Priest in Confessional |
 | Maria Sofia Amendolea |
| Chicca Thomas |
| Manlio Pierotti |
 | Brunello Chiodetti als Sister Gertrude's Lover |
 | Enzo Spitaleri |
| Lesly Thomas |
| Aldo De Franchi |
| Carolyn De Fonseca als Sister Gertrude (voice) (uncredited) |
| Alberto Tarallo | Screenplay |
| Giulio Berruti | Screenplay |
| Giulio Berruti | Director |
| Giancarlo Funaro | Unit Manager |
| Enzo Gallo | Idea |
| Marcello Papaleo | Production Manager |
| Enzo Gallo | Producer |
| Mauro Gavazzi | Makeup Artist |
| Antonio Maccoppi | Director of Photography |
| Mario Giacco | Editor |
| Alberto Vari | Assistant Director |
| Pippo Carta | Camera Operator |
| Stefano Paltrinieri | Set Dressing Artist |
| Alberto Tarallo | Costume Design |
| Maria Rizzo | Hairstylist |
| Roberto Edwin Forrest | Sound Recordist |
| Alessandro Alessandroni | Original Music Composer |
| Franco Vanorio | Production Designer |
