Walter Matthau
Paul Manning
Inger Stevens
Ruth Manning
Sue Ane Langdon
Irma Johnson
Jackie Russell
Jackie Russell
Robert Morse
Ed Stander
Aline Towne
Mousey Man's Wife
Claire Kelly
Harriet Stander
Eve Brent
Joe X's Blowsy Blonde
Marvin Brody
Taxi Driver
Majel Barrett
Mrs. Fred V.
Marian Mason
Mrs. Rance G.
Tommy Farrell
Rance G.'s Hanger On
Linda Harrison
Miss Stardust
Jason Wingreen
Harry 'Big Fella' Johnson
Pat Becker
Party Guest
Fred Holliday
Party Guest
Robert Patten
Party Guest
Ray Montgomery
Party Guest
Virginia Wood
Bubbles
Lucille Ball
Technical Adviser (Mrs. Joe X)
Jack Benny
Technical Adviser (Ollie 'Sweet Lips')
Polly Bergen
Technical Adviser (Clara Brown)
Joey Bishop
Technical Adviser (Charlie)
Sid Caesar
Technical Adviser (at Romanoff's)
Art Carney
Technical Adviser (Joe X)
Wally Cox
Technical Adviser (Married 14 years)
Hal March
Technical Adviser (Man who loses coat)
Louis Nye
Technical Adviser (Irving, House Buyer)
Carl Reiner
Technical Adviser (Rance G.)
Phil Silvers
Technical Advisor (Realtor)
Terry-Thomas
Technical Adviser (Harold aka Tiger)
Ben Blue
Technical Adviser (Shoeless)
Ann Morgan Guilbert
Technical Adviser (Charlie's Wife)
Jeffrey Hunter
Technical Adviser (Mountain Climber)
Marty Ingels
Technical Adviser (Meat Eater)
Sam Jaffe
Technical Adviser (Shrink)
Jayne Mansfield
Technical Adviser (Girl with Harold)
Sanita Pelkey
Girl in Introduction (uncredited)
Delores Wells
Very Attractive Woman (uncredited)
Joy Harmon
Party Girl in Bar (uncredited)
Dee Carroll
Party Guest
Jackie Joseph
Janet Brophy
Heather Young
Girl with Megaphone
Evelyn King
Female Plaintiff
Nancy DeCarl
Woman with Baby
Warrene Ott
Woman with Gun
Michael Romanoff
Romanoff's Maitre D'
Karen Arthur
Lady Dinner Partner at Romanoff's
Damian London
Lone Male Diner at Romanoff's
Chanin Hale
Miss Crenshaw
Julie Tate
Woman in Bed at Motel
George N. Neise
Man in Bed at Motel
Tim Herbert
Shoe Clerk
Patricia Sides
Mau Mau Dancer at Bantu Cusine
Pat McCaffrie
Happy Hour Motel Clerk
Jimmy Cross
Mr. Brown
Elaine Devry
Jocelyn Montgomery
Gene Kelly
Director
Joseph MacDonald
Director of Photography
John Williams
Original Music Composer
Frank Tarloff
Book
Frank Tarloff
Screenplay