Boris Fausto (São Paulo, 8 December 1930) is a Brazilian historian, political scientist and writer.
Fausto was born to a family of Jewish immigrants. His mother, Eva, was born in Turkey, while his father Simon, was born in Transylvania, current Romania. He attended Colégio Mackenzie as an elementary student and Colégio São Bento at high school. He graduated in Law in 1953 and then mastered in History in 1966 at University of São Paulo (USP). In 1965, he became an assistant professor at the School of Filosofy and Human Sciences of the Pontifical Catholic University of São Paulo (PUC-SP) In 1968 he post-graduated at USP and, in the same year, obtained his doctor's degree. In 1975 he became an Associate Professor of political sciences at USP and from 1988 to 1997, he was a retired professor-collaborator of the Political Sciences Department of USP. In 2001, he was nominated for the Brazilian Academy of Sciences.
During his career, he carried out studies on the political history of Brazil in the republican period, about mass immigration to Brazil, crime and criminality in São Paulo and authoritarian thinking.
One of his main works is Revolução de 1930 - historiografia e história (The 1930 Revolution - historiography and history), first published in 1970, in which he confronts visions that defend the state of São Paulo during the 1930 revolution and the subsequent 1932 Constitutionalist Revolution.
In 1961, he married educator and co-founder of Escola Vera Cruz, Cynira Stocco Fausto (1931-2010), with whom he had two sons, sociologist Sérgio Fausto and anthropologist Carlos Fausto.