Rabbi Dr. Leo Baeck (23 May 1873 – 2 November 1956) was a 20th-century German rabbi, scholar, and theologian. He served as leader of Reform Judaism in his native country and internationally, and later represented all German Jews during the Nazi era. After the Second World War, he settled in London, in the United Kingdom, where he served as the chairman of the World Union for Progressive Judaism. In 1955, the Leo Baeck Institute for the study of the history and culture of German-speaking Jewry was established, and Baeck was its first international president. The Leo Baeck Medal has been awarded since 1978 to those who have helped preserve the spirit of German-speaking Jewry in culture, academia, politics, and philanthropy.