William Andrew Goddard III (born March 29, 1937) is the Charles and Mary Ferkel Professor of Chemistry and Applied Physics, and Director of the Materials and Process Simulation Center at the California Institute of Technology. He obtained his B.S. from the University of California, Los Angeles, in 1960 and his Ph.D. from the California Institute of Technology, 1965. After his Ph.D. he remained at the California Institute of Technology as Arthur Amos Noyes Research Fellow (1964–66), Professor of Theoretical Chemistry (1967–78) and Professor of Chemistry & Applied Physics (1978-).