A hack screenwriter writes a screenplay for a former silent film star who has faded into Hollywood obscurity.
| Joe Gillis | William Holden |
| Norma Desmond | Gloria Swanson |
| Max von Mayerling | Erich von Stroheim |
| Betty Schaefer | Nancy Olson |
| Sheldrake | Fred Clark |
| Morino | Lloyd Gough |
| Artie Green | Jack Webb |
| Undertaker | Franklyn Farnum |
| 1st Finance Man | Larry J. Blake |
| 2nd Finance Man | Charles Dayton |
| Cecil B. DeMille | Cecil B. DeMille |
| Hedda Hopper | Hedda Hopper |
| Buster Keaton | Buster Keaton |
| Anna Q. Nilsson | Anna Q. Nilsson |
| H.B. Warner | H.B. Warner |
| Ray Evans | Ray Evans |
| Jay Livingston | Jay Livingston |
| Cop Who Drags Joe's Body from Pool (uncredited) | Fred Aldrich |
| Prop Man #2 (uncredited) | Joel Allen |
| Courtier (uncredited) | Gertrude Astor |
| Editor (uncredited) | Anne Bauchens |
| Restaurant Patron (uncredited) | Edward Biby |
| Accordionist (uncredited) | Danny Borzage |
| Homicide Captain (uncredited) | Ken Christy |
| Sheldrake's Secretary (uncredited) | Ruth Clifford |
| Young Gate Guard Mac at Paramount Studios (uncredited) | John Cortay |
| Camera Operator (uncredited) | Archie R. Dalzell |
| Assistant Coroner (uncredited) | Eddie Dew |
| Hisham (uncredited) | Julia Faye |
| Phone Standby (uncredited) | Al Ferguson |
| Betty's Roommate Connie (uncredited) | Gerry Ganzer |
| Detective (uncredited) | Rudy Germane |
| Salesman at Men's Shop (uncredited) | Kenneth Gibson |
| Creighton Hale (uncredited) | Creighton Hale |
| Grip on DeMille Set (uncredited) | Chuck Hamilton |
| Police Sergeant (uncredited) | Len Hendry |
| Doctor (uncredited) | E. Mason Hopper |
| First Assistant Director (uncredited) | Stan Johnson |
| Little Woman Outside Paramount Gate (uncredited) | Tiny Jones |
| Police Lieutenant (uncredited) | Howard Joslin |
| Camera Operator (uncredited) | Arthur Lane |
| Violinist at Norma's New Year's Eve Party (uncredited) | Perc Launders |
| Party Guest (uncredited) | William Meader |
| Hairdresser (uncredited) | Gertrude Messinger |
| Man on Golf Course (uncredited) | Harold Miller |
| Police Captain (uncredited) | Howard Negley |
| Hog-Eye Electrician (uncredited) | John 'Skins' Miller |
| Dancing Party Guest / Paramount Studio Employee (uncredited) | Lee Miller |
| Prop Man #1 (uncredited) | Ralph Montgomery |
| Gordon Cole (uncredited) | Bert Moorhouse |
| Fat Man (uncredited) | Jay Morley |
| Courtier (uncredited) | Eva Novak |
| Courtier (uncredited) | Frank O'Connor |
| Older Paramount Gate Guard Jonesy (uncredited) | Robert Emmett O'Connor |
| Detective (uncredited) | Jack Perrin |
| Sidney Skolsky (uncredited) | Sidney Skolsky |
| Black Man (uncredited) | Emmett Smith |
| Salesman at Men's Shop (uncredited) | Archie Twitchell |
| Giggling Girl on Phone at Party (uncredited) | Yvette Vickers |
| Actor on DeMille's 'Samson & Delilah' Set (uncredited) | Henry Wilcoxon |
| Camera Assistant (uncredited) | James Hawley |
| Bernice (uncredited) | Bernice Mosk |
| Courtier (uncredited) | Virginia L. Randolph |
| Second Assistant Director (uncredited) | Bill Sheehan |
| Rudy, Shoeshine Boy (uncredited) | Roy Thompson |
| Party Guest (uncredited) | Jack Warden |
| Actor on DeMille's 'Samson & Delilah' Set (uncredited) | Finn Zirzow |
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