| Person | Type | Job | Role(s) |
|---|---|---|---|
 Angelo Iacono | Crew | Production | Production Manager |
 Bruno Nicolai | Crew | Sound | Conductor |
 Carlo Rambaldi | Crew | Crew | Special Effects |
 Dario Argento | Crew | Writing | Screenplay, Director, Story |
 Ennio Morricone | Crew | Sound | Original Music Composer |
Enrico Sabbatini | Crew | Art | Production Design |
 Franco Di Giacomo | Crew | Camera | Director of Photography |
 Françoise Bonnot | Crew | Editing | Editor |
Gianfranco Transunto | Crew | Camera | Assistant Camera |
Giovanni Viti | Crew | Art | Assistant Art Director, Wardrobe Assistant |
 Giuseppe Lanci | Crew | Camera | Camera Operator |
Giuseppe Mangogna | Crew | Production | Unit Manager |
 Luigi Cozzi | Crew | Writing | Story |
Mario Foglietti | Crew | Writing | Story |
Mario Ronchetti | Crew | Sound | Sound Engineer |
Massimo Anzellotti | Crew | Sound | Sound Effects Editor |
Massimo Lentini | Crew | Costume & Make-Up | Assistant Costume Designer |
 Mauro Marchetti | Crew | Camera | Assistant Camera |
Roberto Carnevali | Crew | Camera | Still Photographer |
Roberto Forges Davanzati | Crew | Camera | Assistant Camera |
Salvatore Argento | Crew | Production | Producer |
Umberto Dessena | Crew | Camera | Grip |
Mario Grilli | Crew | Art | Decorator |
Luciano Anzellotti | Crew | Sound | Sound Effects |
Paolo Borselli | Crew | Costume & Make-Up | Hairstylist |
Franco Bassi | Crew | Sound | Sound Mixer |
Bruno Bianchini | Crew | Editing | Assistant Editor |
Dino Galiano | Crew | Crew | Special Effects |
Roberto Pariante | Crew | Directing | Assistant Director |
Sergio Fraticelli | Crew | Editing | Assistant Editor |
Giovanni Morosi | Crew | Costume & Make-Up | Assistant Makeup Artist |
Patrizia Zulini | Crew | Directing | Script Supervisor |
Ennio Mancini | Crew | Lighting | Electrician |
Gastone Coppa | Crew | Camera | Key Grip |
Valerio Garzia | Crew | Lighting | Gaffer |
Giuliano Laurenti | Crew | Costume & Make-Up | Makeup Artist |
Eugenio Fiori | Crew | Sound | Boom Operator |
Carlo Cucchi | Crew | Production | Production Secretary |
Carlo Du Bois | Crew | Production | Administration |
Edda Dell'Orso | Crew | Sound | Musician |
Mina Manes | Crew | Costume & Make-Up | Tailor |
Anteo Pacini | Crew | Lighting | Electrician |
Fernando Monti | Crew | Camera | Grip |
Franco Gubiotti | Crew | Lighting | Electrician |
Giuseppe Ciccocioppo | Crew | Art | Props |
Franco Pedacchia | Crew | Art | Set Dresser |
Orazio Sinacore | Crew | Lighting | Electrician |
Roberta Leoni | Crew | Production | Production Secretary |
Mario Boccanegra | Crew | Camera | Grip |
 Ada Pometti | Cast | Actress | Extra (credit only) |
 Aldo Bufi Landi | Cast | Actor | Pathologist |
 Bud Spencer | Cast | Actor | Diomede / Godfrey |
 Calisto Calisti | Cast | Actor | Carlo Marosi |
 Corrado Olmi | Cast | Actor | Porter |
 Dante Cleri | Cast | Actor | Coffin Salesman |
 Fabrizio Moroni | Cast | Actor | Mirko |
 Francine Racette | Cast | Actress | Dalia |
 Fulvio Mingozzi | Cast | Actor | Music Studio Manager |
 Gildo Di Marco | Cast | Actor | Postman |
 Giovanni Di Benedetto | Cast | Actor | Funeral Exhibition Attendant (uncredited) |
 Guerrino Crivello | Cast | Actor | Rambaldi, the Neighbor |
 Jean-Pierre Marielle | Cast | Actor | Gianni Arrosio |
 Laura Troschel | Cast | Actress | Maria |
Luigi Cozzi | Cast | Actor | Masked Killer in Theater (uncredited) |
 Marisa Fabbri | Cast | Actress | Amelia, the Maid |
 Maurizio Streccioni | Cast | Actor | Funeral Exhibition Visitor (uncredited) |
 Michael Brandon | Cast | Actor | Roberto Tobias |
 Mimsy Farmer | Cast | Actress | Nina Tobias |
 Oreste Lionello | Cast | Actor | The Professor |
 Pino Patti | Cast | Actor | Funeral Exhibition Attendant |
 Quinto Marziali | Cast | Actor | Funeral Exhibition Visitor (uncredited) |
 Renzo Marignano | Cast | Actor | Funeral Exhibition Attendant (uncredited) |
 Sandro Dori | Cast | Actor | Funeral Exhibition Attendant (uncredited) |
 Shirley Corrigan | Cast | Actress | Girl at Party (uncredited) |
 Stefano Oppedisano | Cast | Actor | Bearded guy with girlfriend |
 Stefano Satta Flores | Cast | Actor | Andrea |
 Tom Felleghy | Cast | Actor | Police Commissioner Pini |
 Pupita Lea Scuderoni | Cast | Actress | Funeral Exhibition Visitor (uncredited) |
 Jacques Stany | Cast | Actor | Psychiatrist |
Diego Morreale | Cast | Actor | Extra (uncredited) |
Anna Maria Perego | Cast | Delia's Mother (uncredited) | |
 Franz Colangeli | Cast | Funeral Exhibition Visitor (uncredited) | |
Fortunato Cecilia | Cast | Actor | Funeral Exhibition Visitor (uncredited) |
Leopoldo Migliori | Cast | Musician | |
| Person | Type | Job | Role(s) |
