Leo Monosson (* 7 December 1897 in Moscow, Russia; † 1967 in Jamaica) was a popular schlager singer of the Weimar era. Living in Germany after 1923, he gained success as a singer for the Paul Godwin and Marek Weber Orchestras. He also appeared in several early 1930's German movies with some success, and lent his voice to actors. As singer, he was also known by the names Leo Moll and Leo Frank. He made over 1,400 recordings.