Peter Sugar (January 1919 – December 5, 1999) was an American historian, known for his expertise in the history of East Central Europe, and a frequent speaker at international conferences during the Yugoslav wars of the 1990s.
He relocated to Istanbul prior to the Second World War, where he learned the Turkish language and began to specialize in Southeast European studies.
He enrolled in a doctoral program at Princeton University, receiving his PhD in history and Near Eastern studies in 1959.
His dissertation topic was "The Industrialization of Bosnia-Hercegovina, 1878-1918: The Development of a Backward Region," and was supervised by Cyril E. Black and Jerome Blum.
Sugar began a long-term career at the University of Washington in 1959, teaching European and Ottoman history.