Billy Wilder Director, Screenwriter, Producer Jack Lemmon C.C. Baxter Actor Shirley MacLaine Fran Kubelik Actor Fred MacMurray Jeff D. Sheldrake Actor Ray Walston Joe Dobisch Actor David Lewis Al Kirkeby Actor Jack Kruschen Dr. Dreyfuss Actor Joan Shawlee Sylvia Actor Edie Adams Miss Olsen Actor Hope Holiday Mrs. Margie MacDougall Actor Naomi Stevens Mrs. Mildred Dreyfuss Actor Frances Weintraub Lax Mrs. Lieberman Actor Joyce Jameson The Blonde Actor Willard Waterman Mr. Vanderhoff Actor David White Mr. Eichelberger Actor Benny Burt Charlie - Bartender Actor Hal Smith Man in Santa Claus Suit Actor Dorothy Abbott Office Worker Actor I.A.L. Diamond Screenwriter Joseph LaShelle Cinematographer Daniel Mandell Film Editing Adolph Deutsch Original Music Alexandre Trauner Art Director Edward G. Boyle Set Decoration