Michael Harsegor (מיכאל הרסגור) was an Israeli historian and a left-wing professor of history at the Tel Aviv University. Harsegor's expertise was in the history of Europe in the late Middle Ages.
Harsegor was a native of Romania, but moved to Israel in 1949 at the age of 25. In Romania, he was sentenced to 20 years hard labor for being a member of the HaShomer HaTzair Zionist youth movement, but was released in 1944.