G. Mark Voit (born 1961) is an American physicist and professor in the Department of Physics and Astronomy at Michigan State University. His most cited solely-authored paper is "Tracing Cosmic Evolution with Clusters of Galaxies", in Reviews of Modern Physics,[1] at Michigan State University. He is an Elected Fellow of the American Association for the Advancement of Science.[2][3][4][5] His research involves theoretical investigations of clusters of galaxies, galaxy evolution, and the role of supermassive black holes in galaxy evolution. Voit is an expert in the physics of astrophysical gas and dust.[6]