| Person | Type | Job | Role(s) |
|---|---|---|---|
 Alan DeWitt | Crew | Crew | Dialogue Coach |
 Arthur Bloom | Crew | Sound | Boom Operator |
 Billy Mauch | Crew | Sound | Dialogue Editor |
Bob Wyman | Crew | Editing | Editor |
Bruce Satterlee | Crew | Directing | Second Assistant Director |
Dennis J. Parrish | Crew | Art | Property Master |
Donald Harris | Crew | Sound | Music Editor |
E. Preston Ames | Crew | Art | Art Direction |
Fred Williams | Crew | Costume & Make-Up | Makeup Artist |
Gene Lauritzen | Crew | Art | Construction Coordinator |
Hal Klein | Crew | Production | Unit Production Manager |
Harry Ray | Crew | Costume & Make-Up | Makeup Artist |
Hope Williams | Crew | Directing | Script Supervisor |
Jack C. Jacobsen | Crew | Sound | Sound Mixer |
 Joel Schumacher | Crew | Costume & Make-Up | Costume Design |
John O. Young | Crew | Sound | Sound Effects Editor |
Lou Barlia | Crew | Camera | Camera Operator |
 Marvin Hamlisch | Crew | Sound | Original Music Composer |
Marvin March | Crew | Art | Set Decoration |
 Melvin Frank | Crew | Directing | Director, Producer |
Mentor Huebner | Crew | Art | Production Illustrator |
 Neil Simon | Crew | Writing | Screenplay, Theatre Play |
Pete Candoli | Crew | Sound | Musician |
Philip H. Lathrop | Crew | Camera | Director of Photography |
Sherry Wilson | Crew | Costume & Make-Up | Hairdresser |
 Tommy Tedesco | Crew | Sound | Musician |
James Perdue | Crew | Sound | Sound Recordist |
Vinnie Gerardo | Crew | Camera | Assistant Camera |
Tex Rudloff | Crew | Sound | Sound |
Carl Manoogian | Crew | Camera | Key Grip |
Al Overton | Crew | Sound | Sound |
Ed Scheid | Crew | Sound | Sound Effects Editor |
Arthur H. Pullen | Crew | Sound | Sound Effects Editor |
Thalia Phillips | Crew | Costume & Make-Up | Wardrobe Supervisor |
Howard Roessel | Crew | Directing | First Assistant Director |
Randy Nite | Crew | Sound | Sound Editor |
Billie Owens | Crew | Sound | Sound Effects Editor |
Michael J. Harte | Crew | Costume & Make-Up | Wardrobe Supervisor |
Arnold Saint Subber | Crew | Crew | Other |
Alan DeWitt | Cast | Actor | Wayne Morgan |
 Anne Bancroft | Cast | Actress | Edna Edison |
 Cosmo Sardo | Cast | Actor | Subway Passenger (uncredited) |
Dee Carroll | Cast | Actress | Helen |
 Ed Peck | Cast | Actor | Man Upstairs |
Eddie Garrett | Cast | Actor | Elevator Passenger (uncredited) |
 Elizabeth Wilson | Cast | Actress | Pauline |
 F. Murray Abraham | Cast | Actor | Taxi Driver |
 Florence Stanley | Cast | Actress | Pearl |
 Gary Owens | Cast | Actor | Radio Newscaster (voice) (uncredited) |
 Gene Blakely | Cast | Actor | Charlie |
 Gene Saks | Cast | Actor | Harry Edison |
Harry Ray | Cast | Actor | Man with Dog |
 Ivor Francis | Cast | Actor | Psychiatrist |
 Jack Lemmon | Cast | Actor | Mel Edison |
 James McCallion | Cast | Actor | Mr. Cooperman |
 Joe Turkel | Cast | Actor | Man Upstairs (voice) (uncredited) |
 John Ritter | Cast | Actor | Elevator Passenger (uncredited) |
Ketty Lester | Cast | Actress | Unemployment Clerk |
Lonnie Burr | Cast | Man on Street (uncredited) | |
 M. Emmet Walsh | Cast | Actor | Doorman |
 Maxine Stuart | Cast | Actress | Belle |
Norman Stevans | Cast | Actor | Elevator Passenger (uncredited) |
 Patricia Marshall | Cast | Actress | Woman Upstairs |
 Stack Pierce | Cast | Actor | Detective |
 Sylvester Stallone | Cast | Actor | Youth in Park |
Ben Lautman | Cast | NYU Student (uncredited) | |
 Arlen Stuart | Cast | Actress | Elevator Passenger |
Fat Thomas | Cast | Actor | Bus Driver |
Dave Michaels | Cast | Radio Newscaster (voice) (uncredited) | |
| Person | Type | Job | Role(s) |
