Milton Dean Slaughter is an American theoretical and phenomenological physicist and Visiting Professor of Physics at Florida International University.Slaughter was a Visiting Associate Professor of Physics in the Center for Theoretical Physics, University of Maryland, College Park while on sabbatical from Los Alamos National Laboratory (LANL) of the University of California from 1984–1985. He is also Chair Emeritus and University Research Professor of Physics Emeritus at the University of New Orleans (UNO). Prior to joining UNO as Chair of the Physics Department, he was a Staff Physicist at the Los Alamos National Laboratory of the University of California.