| Faye Dunaway (Diana Christenson) |
| William Holden (Max Schumacher) |
| Peter Finch (Howard Beale) |
| Robert Duvall (Frank Hackett) |
| Wesley Addy (Nelson Chaney) |
| Ned Beatty (Arthur Jensen) |
| William Prince (Edward Ruddy) |
| Conchata Ferrell (Barbara Schlesinger) |
| Darryl Hoikman (Bill Heron) |
| Pirie Mac Donald (Herb Thackeray) |
| Lane Smith (Robert McDonough) |
| Graham Brown (Michael Sandies) |
| Beatrice Straight (Louise Schumacher) |
| Marlène Warfield (Laureen Hobbs) |
| Ed Crowley (Joe Donnelly) |
| Mitchell Jason (Arthur Zangwill) |
| Gene Gross (Milton Steinman) |