Felix Ungar
Jack Lemmon
Oscar Madison
Walter Matthau
Sports Journalist (uncredited)
Heywood Hale Broun
'Speed'
Larry Haines
Vinnie
John Fiedler
Murray
Herb Edelman
Roy
David Sheiner
Cecily
Monica Evans
Gwendolyn
Carole Shelley
Waitress
Iris Adrian
Chambermaid (uncredited)
Billie Bird
Go-go Dancer (uncredited)
Angelique Pettyjohn
Makeup Supervisor
Wally Westmore
Theatre Play
Neil Simon
Screenplay
Director
Gene Saks
Producer
Howard W. Koch
Original Music Composer
Neal Hefti
Editor
Frank Bracht
Director of Photography
Robert B. Hauser
Sound Recordist
John R. Carter
Assistant Director
Hank Moonjean
Costume Designer
Jack Bear
Set Decoration
Ray Moyer
Makeup Artist
Harry Ray
Script Supervisor
Luanna S. Poole
Charles Grenzbach
Hair Supervisor
Nellie Manley
Wardrobe Supervisor
John A. Anderson
Unit Production Manager
William Davidson
Jack Petty
Art Direction
Walter H. Tyler
Robert R. Benton
Hal Pereira
Visual Effects
Paul K. Lerpae