Rabbo Leo Landman (1928-2001) was an Orthodox rabbi and scholar in the United States. He graduated Yeshiva College in 1949 and received his semikhah at Yeshiva University in 1951. At Dropsie College in Philadelphia, he acquired his doctorate. He joined the Bernard Revel Graduate School of Jewish Studies (BRGS) in 1969 as secretary of the faculty and assistant professor of Jewish history and as an adjunct associate professor besides serving as a dean of undergraduate Jewish studies at YU and as a dean for BRGS.. He served as rabbi for Congregation Talmud Torah of Flatbush (Brooklyn, New York) and was active in the Philadelphia Jewish community. He authored Jewish law in the diaspora (1968), The Cantor: an Historic Perspective (1972), Judaism and Drugs (1973), Messianism in the Talmudic era (1979).