William Kelly Simpson (born January 3, 1928 – March 24, 2017 in New York City) was an American professor of Egyptology, Archaeology, Ancient Egyptian literature, and Afro-Asiatic languages at Yale University.
He is one of several co-directors of the University of Pennsylvania Museum Yale University Expedition to Abydos, Egypt, which conducts archaeological excavations of ancient sites.
He was born on January 3, 1928 in New York City, to Kenneth F. Simpson (1895-1941) and Helen-Louise Knickerbacker Porter (1893-1981).
He married Marilyn Ellen Milton (1931—1980), a granddaughter of philanthropists John Davison Rockefeller Jr.. William and Marilyn have two children: