Allan H. MacDonald is a theoretical condensed matter physicist and the Sid W. Richardson Foundation Regents Chair Professor of Physics at The University of Texas at Austin. He was born in Antigonish, Nova Scotia, Canada, and attended local schools completing a B.S. at St. Francis Xavier University in 1973. He completed his Ph.D.in physics at The University of Toronto in 1978, working with S.H. Vosko on relativistic generalizations of density functional theory, and on the application of density functional theory to magnetism in metals.