Leo Baeck 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.

Reform Judaism, also known as Liberal Judaism or Progressive Judaism, is a major Jewish denomination that emphasizes the evolving nature of Judaism, the superiority of its ethical aspects to its ceremonial ones, and belief in a continuous revelation which is closely intertwined with human reason and not limited to the Theophany at Mount Sinai. A highly liberal strand of Judaism, it is characterized by little stress on ritual and personal observance, regarding Jewish law as non-binding and the individual Jew as autonomous, and by a great openness to external influences and progressive values.