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