Susan Mann Trofimenkoff CM FRSC (born February 10, 1941) is a Canadian historian and was president of York University from 1992 to 1997. Mann is the sister of politician Gretchen Brewin. Born in Ottawa, Ontario, Mann received a Bachelor of Arts degree in Modern History in 1963 from the University of Toronto, a Master of Arts degree from the University of Western Ontario in 1965, and a PhD from Université Laval in 1970. As professor, she has taught at the Université de Montréal (1966-1970), University of Calgary (1970-1972), and the University of Ottawa (1972-1992). She was chair of the Department of History at the University of Ottawa from 1977 to 1980. From 1984 to 1990 she was Vice-Rector Academic. From 1992 to 1997, she was the first woman president of York University.