Gustav Kadelburg was a Hungarian-German actor and dramatist. His greatest success came posthumously, the operetta version of his play The White Horse Inn.

The White Horse Inn is an operetta or musical comedy by Ralph Benatzky and Robert Stolz in collaboration with a number of other composers and writers, set in the picturesque Salzkammergut region of Upper Austria. It is about the head waiter of the White Horse Inn in St. Wolfgang who is desperately in love with the owner of the inn, a resolute young woman who at first only has eyes for one of her regular guests. Sometimes classified as an operetta, the show enjoyed huge successes in the West End, as a Broadway version, and was filmed several times. In a way similar to The Sound of Music and the three Sissi movies, the play and its film versions have contributed to the popular image of Austria as an alpine idyll—the kind of idyll tourists have been seeking for almost a century now. Today, Im weißen Rößl is mainly remembered for its songs, many of which have become popular classics.