The Secret of the Red Cat (German: Das Geheimnis der roten Katze) is a 1949 West German comedy crime film directed by Helmut Weiss and starring Heinz Rühmann, Gustav Knuth and Angelika Hauff.

The film's sets were designed by the art director Max Mellin.

André is a struggling actor working at the Red Cat nightclub in Paris where he provides atmosphere by playing a gang leader.

When her father's famous "Halifax Diamond is stolen, André is suspected of being the guilty party.

André adopts various disguises in order to expose Pitou's guilt.