If It's Tuesday, This Must Be Belgium

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

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