Donald Bruce Johnstone, also known as D. Bruce Johnstone, (born January 13, 1941) is an American educator who served as Chancellor of the State University of New York (SUNY), headquartered in Albany, New York; and President of Buffalo State College, in Buffalo, New York. Johnstone is also Professor Emeritus at the University at Buffalo (UB). He was named SUNY Chancellor Emeritus in 2014.