My Sister and I (German: Meine Schwester und ich) is a 1929 German silent comedy film directed by Manfred Noa and starring Mady Christians, Hans Junkermann and Jack Trevor. It was shot at the National Studios in Berlin. The film's art direction was by Ferdinand Bellan and Alexander Ferenczy.
The film is a German adaptation of a French play by Louis Verneuil and Georges Berr, Ma sà Âur et moi. The rights to the film were reportedly difficult to negotiate. The film was praised for Noa's direction.