John Walter Clark (born 1935), is Wayman Crow Professor of Physics emeritus at Washington University in St. Louis, and a recipient of the Eugene Feenberg Medal in 1987 for his contributions to many-body theory.
He received his BS and MA degrees in physics from the University of Texas at Austin in 1955 and 1957, respectively.
He then earned his Ph.D. in Physics under the supervision of Eugene Feenberg at Washington University in St. Louis in 1959.
[4] Clark is notable for his contributions to nuclear physics and many-body theory, but later in his career also turned his interests to neural nets.
He supervised over two dozen Ph.D. students and was notable for promoting women in the field.