Leonard Krieger

Leonard Krieger (28 August 1918 – 12 October 1990) was an American historian who specialized in Modern Europe, especially Germany. He received his Ph.D. in 1949 from Yale. His dissertation, “Liberal Ideas and Institutions in the German Period of Unification,” was written under the supervision of Hajo Holborn, the eminent historian.

He was influential as an intellectual historian, and particularly for his discussion of historicism. He has been called "the most intellectual historian in the United States during the Cold War". He was a member of both the American Academy of Arts and Sciences and the American Philosophical Society.

Krieger was born in Newark, New Jersey. His brother was the literary theorist Murray Krieger. He died of progressive supranuclear palsy (PSP) in 1990.