The Man Who Couldn't Say No (German: Der Mann, der nicht nein sagen kann) is a 1938 German romantic comedy film directed by Mario Camerini and starring Karl Ludwig Diehl, Karin Hardt, and Leo Slezak.

It is a remake of the 1936 Italian film But It's Nothing Serious also directed by Camerini.

[2] The film's sets were designed by the art directors Gabriel Pellon and Heinrich Richter.

German version of the Italian film Ma Non È Una Cosa Seria, from a Pirandello story: a man inoculates himself against emotional entanglement by deliberately marrying a woman he has no interest in and with whom he will spend no time.

This article related to a German film of the 1930s is a stub.