Directed by
| Robert Moore | ||
Writing Credits
| Neil Simon | ... | (written by) |
Cast (in credits order) verified as complete
| Eileen Brennan | ... | Tess Skeffington | |
| Truman Capote | ... | Lionel Twain | |
| James Coco | ... | Milo Perrier | |
| Peter Falk | ... | Sam Diamond | |
| Alec Guinness | ... | Bensonmum | |
| Elsa Lanchester | ... | Jessica Marbles | |
| David Niven | ... | Dick Charleston | |
| Peter Sellers | ... | Sidney Wang | |
| Maggie Smith | ... | Dora Charleston | |
| Nancy Walker | ... | Maid | |
| Estelle Winwood | ... | Nurse | |
| James Cromwell | ... | Marcel | |
| Richard Narita | ... | Willie Wang | |
| Rest of cast listed alphabetically: | |||
 |
Myron | ... | Myron the Dog (uncredited) |
| Fay Wray | ... | Screaming Door Bell (archive sound) (uncredited) | |
Produced by
| Roger M. Rothstein | ... | associate producer |
| Ray Stark | ... | producer |
Music by
| Dave Grusin | ||
Cinematography by
| David M. Walsh | ... | director of photography |
Editing by
| John F. Burnett | ||
Casting By
| Jennifer Shull | ||
Production Design by
| Stephen B. Grimes | ... | (as Stephen Grimes) |
Art Direction by
| Harry Kemm | ||
Set Decoration by
| Marvin March | ||
Costume Design by
| Ann Roth | ... | (costumes designed by) |
Makeup Department
| Joe DiBella | ... | makeup (as Joseph Di Bella) |
| Charles H. Schram | ... | makeup supervisor (as Charles Schram) |
| Vivienne Walker | ... | hairstylist |
Second Unit Director or Assistant Director
| Fred T. Gallo | ... | assistant director |
| David Sosna | ... | second assistant director (as David O. Sosna) |
Art Department
| Richard Lawrence | ... | uncredited |
| Terry E. Lewis | ... | property master |
| Ron Frazier | ... | carpenter (uncredited) |
Sound Department
| Jerry Jost | ... | sound mixer |
| Joseph Kite | ... | boom operator |
| Tex Rudloff | ... | re-recordist |
| Frank E. Warner | ... | sound effects editor (as Frank Warner) |
Special Effects by
| Augie Lohman | ... | special effects |
Stunts
| Maurice Marks | ... | stunts (uncredited) |
Camera and Electrical Department
| Robert Edesa | ... | assistant cameraman |
| Norman Harris | ... | gaffer |
| Richard Moran | ... | key grip |
| Roger Shearman Jr. | ... | camera operator |
| Mel Traxel | ... | still photographer |
| Ron Kenyon | ... | lighting technician (uncredited) |
Costume and Wardrobe Department
| Tony Faso | ... | costumer: men |
| Agnes G. Henry | ... | costumer: women |
| Joan Joseff | ... | costume jeweller (uncredited) |
| Tina Joseff | ... | costume jeweller (uncredited) |
Editorial Department
| Margaret Booth | ... | supervising film editor |
| John Brice | ... | apprentice film editor |
| Michael A. Stevenson | ... | assistant film editor |
Music Department
| George Probert | ... | music editor |
| Murray Adler | ... | musician: violin (uncredited) |
| Chuck Berghofer | ... | musician: bass (uncredited) |
| Richard Berres | ... | conductor (uncredited) |
| Bobby Bruce | ... | musician: violin (uncredited) |
| Dennis Budimir | ... | musician: guitar (uncredited) |
| Denyse Buffum | ... | musician: viola (uncredited) |
| Thomas R. Buffum | ... | musician: violin (uncredited) |
| Larry Bunker | ... | musician: percussion (uncredited) |
| Gene Cipriano | ... | musician (uncredited) |
| Ronald Cooper | ... | musician: cello (uncredited) |
| Vince De Rosa | ... | musician: french horn (uncredited) |
| Harold Dicterow | ... | musician: violin (uncredited) |
| Carl Fortina | ... | musician: accordion (uncredited) |
| Ralph Grierson | ... | musician: piano (uncredited) |
| Dave Grusin | ... | score producer (uncredited) |
| Norman Herzburg | ... | musician: bassoon (uncredited) |
| The Hollywood Studio Symphony | ... | music performed by (uncredited) |
| Tommy Johnson | ... | musician: trombone (uncredited) |
| Anatol Kaminsky | ... | musician: violin (uncredited) |
| Peter Kent | ... | musician: violin (uncredited) |
| Harry Klee | ... | musician (uncredited) |
| Marion Klein | ... | orchestra contractor (uncredited) |
| Ezra Kliger | ... | musician: violin (uncredited) |
| Raphael Kramer | ... | musician: cello (uncredited) |
| Connie Kupka | ... | musician: violin (uncredited) |
| Ronald Langinger | ... | musician (uncredited) |
| Ron Leonard | ... | musician: cello (uncredited) |
| Edgar Lustgarten | ... | musician: cello (uncredited) |
| Malcolm McNab | ... | musician: trumpet (uncredited) |
| Carole Mukagawa | ... | musician: viola (uncredited) |
| Richard Nash | ... | musician: trombone (uncredited) |
| Dan Neufeld | ... | musician: viola (uncredited) |
| Erno Neufeld | ... | musician: violin (uncredited) |
| Richard Perissi | ... | musician: french horn (uncredited) |
| Joe Porcaro | ... | musician: percussion (uncredited) |
| Emil Richards | ... | musician: percussion (uncredited) |
| Bud Shank | ... | musician (uncredited) |
| Harry Shlutz | ... | musician: cello (uncredited) |
| Barry Socher | ... | musician: violin (uncredited) |
| David Speltz | ... | musician: cello (uncredited) |
| Albert Steinberg | ... | musician: violin (uncredited) |
| Ann Stockton | ... | musician: harp (uncredited) |
| Tommy Tedesco | ... | musician: guitar (uncredited) |
| Louise Di Tullio | ... | musician: flute (uncredited) |
| Ian Underwood | ... | musician: piano (uncredited) |
| Charles Veal Jr. | ... | musician: violin (uncredited) |
| Ken Watson | ... | musician: percussion (uncredited) |
Additional Crew
| Charles Addams | ... | title drawings |
| Frank Bueno | ... | assistant to producer |
| Wayne Fitzgerald | ... | title designer |
| Shari Leibowitz | ... | assistant to production manager |
| Mary Malin | ... | assistant: Ann Roth |
| Vince Martinez | ... | auditor |
| George Rondo | ... | dialogue coach |
| Carol Shapiro | ... | unit publicist |
| Julia Tucker | ... | script continuity |
| David Oliver Pfeil | ... | title cinematographer (uncredited) |
