If It's Tuesday, This Must Be Belgium

Anita Ekberg as Performer Hilarie Thompson as Shelly Ferguson Robert Vaughn as Antonio, Photographer John Cassavetes as Steve Elsa Martinelli as Maria, Woman on Venetian Bridge Suzanne Pleshette as Sam Perkins Pamela Britton as Feda Donovan as Singer in Youth Hostel Catherine Spaak as Woman Posing for Photographer Ian McShane as Charlie Cartwright Mario Carotenuto as Giuseppe Senta Berger as London Saleswoman Yutte Stensgaard as Museum Guide Mildred Natwick as Jenny Grant Carol Cleveland as Travel Agent Paul Esser as German Sergeant Marty Ingels as Bert Greenfield Peggy Cass as Edna Ferguson Joan Collins as Girl on Sidewalk Marina Berti as Gina Aubrey Morris as Harry Dix Jennifer White as Dot Ben Gazzara as Card Player Vittorio De Sica as Shoemaker Murray Hamilton as Fred Ferguson Suzy Falk as German Sergeant's Wife Norman Fell as Harve Blakely Sandy Baron as John Marino Patricia Routledge as Mrs. Featherstone Frank Latimore as George Luke Halpin as Bo Michael Constantine as Jack Harmon Reva Rose as Irma Blakely Virna Lisi as John's Beautiful Cousin in Rome

Mel Stuart Director Walter Scharf Original Music Composer David L. Wolper Executive Producer Lynn Stalmaster Casting