James Bernard Machen (/ˈmætʃən/; born March 26, 1944) is an American university professor and administrator. Machen is a native of Mississippi, and earned several academic degrees before becoming a university administrator and president. Machen had been the president of the University of Utah in Salt Lake City, Utah and the University of Florida in Gainesville, Florida. He also sits on the Sanford-Burnham Medical Research Institute's Board of Trustees. On June 8, 2012, Machen announced he would be stepping down as president in 2013. However, Machen was asked by state and university leaders to stay on, as the school had not yet found a suitable replacement. He was finally succeeded by W. Kent Fuchs on January 1, 2015.