| Person | Type | Job | Role(s) |
|---|---|---|---|
 Alexander Singer | Crew | Directing | Assistant Director |
 Gerald Fried | Crew | Sound | Music |
Julian Bergman | Crew | Editing | Editor |
Robert Rein | Crew | Crew | Script |
 Stanley Kubrick | Crew | Directing | Director, Producer, Director of Photography |
Alexander Singer | Cast | Actor | Self |
 Douglas Edwards | Cast | Actor | Narrator |
Judy Singer | Cast | Self, female fan in crowd (uncredited) | |
Nat Fleischer | Cast | Self, boxing historian | |
Stanley Kubrick | Cast | Actor | Self (man at ringside with camera) (uncredited) |
Vincent Cartier | Cast | Self, Walter's twin brother and manager | |
Walter Cartier | Cast | Self | |
Bobby James | Cast | Self, Walter's opponent | |
| Person | Type | Job | Role(s) |
