Charles C. Thach, Jr. (1894–1966) was educated at Johns Hopkins University and received his Ph.D. in 1922. Specializing in political theory, he taught at the University of Minnesota and Johns Hopkins. He later became a Professor of Government at New York University, where he taught for over thirty years.
He is the son of Charles Coleman Thatch, a professor of English and former President of Alabama Polytechnic Institute, now known as Auburn University, from 1902 to 1920.