Matthias B. Lehmann is professor of modern Jewish history at the University of Cologne, where he directs the Martin Buber Institute for Jewish Studies. His main interests are nineteenth century Jewish history in a transnational perspective, international Jewish philanthropy, and Sephardic cultural history. He is the author of The Baron: Maurice de Hirsch and the Jewish Nineteenth Century (Stanford 2022), winner of the Jordan Schnitzer Book Prize, Emissaries from the Holy Land (Stanford 2014), co-editor of Jews and the Mediterranean (Indiana 2020), and Jüdische Geschichte: Von der Antike bis zur Gegenwart (Munich 2025). He has held previous appointments at Indiana University Bloomington and as Teller Family Chair in Jewish History at the University of California, Irvine. Lehmann is an elected member of the American Academy of Jewish Research and co-editor of the Studia Judaica book series published by DeGruyter.