My Wife, the Impostor () is a 1931 German comedy film directed by Kurt Gerron and starring Heinz Rühmann, Käthe von Nagy and Fritz Grünbaum. It was shot at the Babelsberg Studios in Berlin. The film's sets were designed by the art director Otto Erdmann and Hans Sohnle. A separate French-language version was also made, with a different cast.
Peter is an easygoing bank clerk but his wife Jutta has much grander ambitions for her husband. When she meets the sausage manufacturer Marty, she pretends that Peter is in fact the director of the bank. This seems a stroke of good fortune for Marry as his business is struggling and the assistance of a powerful banker could help. To maintain the ruse Jutta takes him to a luxury hotel. There she encounters the singer Ileana, the wife of a wealthy mustard producer. Spotting a potential combination, she masterminds a merger between the two concerns. To cap it all Peter is now given an important job in the management of the new joint factory.