Jack Lemmon as Sam Bissel

Romy Schneider as Janet Lagerlof

Dorothy Provine as Minerva Bissel

Mike Connors as Howard Ebbets

Edward Andrews as Mr. Burke

Louis Nye as Reinhold Shiffner

Robert Q. Lewis as Earl

Joyce Jameson as Hotel Prostitute

Anne Seymour as Irene

Charles Lane as Jack Bailey

Linda Watkins as Edna Bailey

Peter Hobbs as Phil Reisner

Tristram Coffin as Sonny Blatchford

Neil Hamilton as Larry Boling

Riza Royce as Miss Halverson

William Forrest as Millard Mellner

Edward G. Robinson as Simon Nurdlinger

Vicki Cos as Jenna Bissel (uncredited)

Kym Karath as Denise Bissell (uncredited)

Bess Flowers as Mrs. Burke (uncredited)

Elsie Baker as Mrs. Nurdlinger (uncredited)

Quinn O'Hara as Marsha (uncredited)

Aneta Corsaut as Fran (uncredited)

Bernie Kopell as Richard Taragon (uncredited)

Jim Bannon as Policeman (uncredited)

George Blagoi as Nurdlinger Servant (uncredited)

Barbara Bouchet as Receptionist (uncredited)

Jan Brooks as Gloria (uncredited)

William Bryant as Hausner (uncredited)

Richard Hale as Mr. Vernier (uncredited)

Joel Fluellen as Judge (uncredited)

Colin Kenny as Nurdlinger Servant (uncredited)

David Ketchum as Dave (uncredited)

George Savalas as Truck Driver (uncredited)

Norman Stevans as Advertising Agency Executive (uncredited)

David Swift as TV Director (uncredited)

Hal Taggart as McVale (uncredited)

Patrick Waltz as Wyeth (uncredited)

Harlan Warde as Mr. Anderson (uncredited)

Sheldon Allman as Hotel Desk Clerk (uncredited)

Brandon Beach as Party Guest (uncredited)

Clark Burroughs as The Hi-Lo's - Hertz Commercial (uncredited)

Peter Camlin as French Waiter (uncredited)

Jan Citron as Tricyclist Opening Credits (uncredited)

Jimmy Cross as Drunk (uncredited)

Barbara Eaton as Hooker (uncredited)

Harry Hines as Old Man in Window (uncredited)

Hilda Kirby as Derelict (uncredited)

Gil Lamb as Drunk (uncredited)

Bob Morse as The Hi-Lo's - Hertz Commercial (uncredited)

Lucy Moyer as Specialty Dancer (uncredited)

Joe Palma as Joe the Mailman (uncredited)

Pat Patterson as Foot Policeman (uncredited)

Paul Power as Advertising Agency Executive (uncredited)

Gene Puerling as The Hi-Lo's - Hertz Commercial (uncredited)

Harry Ray as Harry the Milkman (uncredited)

Tony Regan as Advertising Agency Executive (uncredited)

Walter Rode as (uncredited)

Pearl Shear as Hooker (uncredited)

Don Shelton as The Hi-Lo's - Hertz Commercial (uncredited)

Hommy Stewart as Painter (uncredited)

Zanouba as Belly Dancer (uncredited)