The triumph and tragedy of Native American Jim Thorpe, who, after winning both the pentathlon and decathlon in the same Olympics, is stripped of his medals on a technicality.
| Actor | Role |
|---|---|
 Burt LancasterJim Thorpe | Jim Thorpe |
 Charles BickfordGlenn S. 'Pop' Warner | Glenn S. 'Pop' Warner |
 Steve CochranPeter Allendine | Peter Allendine |
 Phyllis ThaxterMargaret Miller | Margaret Miller |
 Dick WessonEd Guyac | Ed Guyac |
 Jack Big HeadLittle Boy Who Walk Like Bear (as Jack Bighead) | Little Boy Who Walk Like Bear (as Jack Bighead) |
| SSonny ChorreWally Denny (as Suni Warcloud) | Wally Denny (as Suni Warcloud) |
| AAl MejiaLouis Tewanema | Louis Tewanema |
| HHubie KernsTom Ashenbrunner | Tom Ashenbrunner |
 Nestor PaivaNot listed | Not listed |
| EEula MorganNot listed | Not listed |
| JJimmy OggBellboy (uncredited) | Bellboy (uncredited) |