Amateur and professional bodybuilders prepare for the 1975 Mr. Olympia and Mr. Universe contests as five-time champion Arnold Schwarzenegger defends his Mr. Olympia title against Serge Nubret and the shy young Lou Ferrigno.
You can now watch Pumping Iron online on the following streaming providers in the United States.
| Directing | Robert Fiore | Director |
| Directing | George Butler | Director |
| Lighting | John Isaacs | Electrician |
| Writing | Charles Gaines | Writer |
| Writing | George Butler | Writer |
| Production | George Butler | Producer |
| Production | Jerome Gary | Producer |
| Sound | Michael Small | Music |
| Camera | Robert Fiore | Director of Photography |
| Editing | Geof Bartz | Editor |
| Editing | Lawrence Silk | Editor |
| Sound | Francis Daniel | Sound |
| Sound | Lee Dichter | Sound Mixer |
| Sound | Harry Lapham | Sound |
| Sound | Hugh Little | Sound |
| Sound | Joan Weidman | Sound |
