Jack Lemmon

Felix Ungar

Walter Matthau

Oscar Madison

John Fiedler

Vinnie

Herb Edelman

Murray

David Sheiner

Roy

Monica Evans

Cecily

Carole Shelley

Gwendolyn

Iris Adrian

Waitress

Billie Bird

Chambermaid (uncredited)

Angelique Pettyjohn

Go-go Dancer (uncredited)

Heywood Hale Broun

Sports Journalist (uncredited)

Larry Haines

'Speed'

Gene Saks

Director

Howard W. Koch

Producer

Frank Bracht

Editor

Neal Hefti

Original Music Composer

Robert B. Hauser

Director of Photography

John R. Carter

Sound Recordist

Jack Bear

Costume Designer

Neil Simon

Screenplay

Neil Simon

Theatre Play

Hal Pereira

Art Direction

Walter H. Tyler

Art Direction

Robert R. Benton

Set Decoration

Ray Moyer

Set Decoration

Wally Westmore

Makeup Supervisor

Jack Petty

Makeup Artist

Harry Ray

Makeup Artist

Nellie Manley

Hair Supervisor

William Davidson

Unit Production Manager

Hank Moonjean

Assistant Director

Luanna S. Poole

Script Supervisor

John A. Anderson

Wardrobe Supervisor

Paul K. Lerpae

Visual Effects

Charles Grenzbach

Sound Recordist