Robert Dallek (born May 16, 1934 in Brooklyn, New York) is an American historian specializing in the Presidents of the United States. He retired as a history professor at Boston University in 2004 and previously taught at Columbia University, the University of California, Los Angeles (UCLA), and Oxford University. As of November 2013 he teaches at Stanford University's Stanford in Washington program in Washington, D.C. He won the Bancroft Prize for his 1979 book Franklin D. Roosevelt and American Foreign Policy, 1932–1945 as well as other awards for scholarship and teaching.
Born in Brooklyn, Dallek is the son of Rubin (a business-machine dealer) and Esther (Fisher) Dallek.
Dallek attended the University of Illinois, graduating with a B.A. in history in June 1955. He did graduate work at Columbia University, earning an M.A. in February 1957, and a Ph.D. in June 1964. While working on his Ph.D., he was a history instructor at Columbia.
He married Geraldine Kronmal (a policy health analyst) on August 22, 1965.