Prince Bob (Hungarian: Bob herceg) is a 1941 Hungarian historical musical film directed by László Kalmár and starring László Szilassy, Erzsi Simor and Gábor Rajnay. An operetta film, it is an adaptation of the 1902 operetta Prince Bob composed by Jenà  Huszka. It was shot at the Hunnia Studios in Budapest. The film's sets were designed by the art director Imre Sörés.
Igor, the heir to a Grand Duchy, goes around incognito under the name Bob. He falls in love with Annie, a shopkeeper's daughter. He tries to prevent her being married off to one her debt-ridden mother's creditors.