Leonard Jeffries Jr. (born January 19, 1937) is an American political scientist, Black supremacist, and former academic. He was the departmental chair of Black Studies at the City College of New York, part of the City University of New York (CUNY). He was born and raised in Newark, New Jersey. He is the uncle of U.S. House Minority Leader Hakeem Jeffries and Ohio State University historian Hasan Kwame Jeffries.