Gershon Ben-Shakhar (גרשון בן שחר; born May 25, 1942) is an Israeli psychologist who is a former President of the Open University of Israel.
Ben-Shakhar earned a B.A. in Psychology and Statistics (1966), an M.A. in Psychology (1970), and a Ph.D. in Psychology (1975) from The Hebrew University of Jerusalem. He was a Post-Doctoral Fellow at Northwestern University in Evanston, Illinois, from 1975 to 1976.
Ben-Shakhar taught in the Department of Psychology at The Hebrew University of Jerusalem from 1981 on, ultimately as a Professor and for a time as the Chair of the Department and the Dean of the Faculty of Social Sciences.
In 2003 he became President of the Open University of Israel, succeeding Eliahu Nissim. In 2011 he was an EMET Prize Laureate.
Along with John J. Furedy he wrote the book Theories and Applications in the Detection of Deception: A psychophysiological and international perspective (New York: Springer-Verlag, 1990).