Chaste Susanne (German: Die keusche Susanne) is a 1926 German silent comedy film directed by Richard Eichberg and starring Lilian Harvey, Willy Fritsch and Ruth Weyher. It is based on the 1910 operetta Die keusche Susanne composed by Jean Gilbert with a libretto by Georg Okonkowski. In Britain it was released under the alternative title The Girl in the Taxi in reference to The Girl in the Taxi in the English version of the operetta. The film's art direction is by Jacek Rotmil. It was filmed at the Johannisthal Studios in Berlin.

It marked the first pairing of Harvey and Fritsch who went on to become the leading screen couple in Weimar and early Nazi cinema. The film premiered at the UFA-Palast am Zoo and was a smash hit on its release.