Hotel by the Hour (German title: Das Stundenhotel von St. Pauli) is a 1970 West German crime film directed by Rolf Olsen and starring Curd Jürgens, Andrea Rau, and Corny Collins. It is set in the red-light district of St. Pauli in Hamburg. A Stundenhotel is a motel where rooms are let by the hour, similar to Japanese love hotels.

The film's sets were designed by the art director Ernst H. Albrecht.