John Walker Hayes (1938 -), mostly known as J.W. Hayes, is a British archaeologist. Hayes studied at the University of Cambridge and was curator at the Royal Ontario Museum in Toronto since 1968. He expertised in Roman pottery, especially Eastern and North-African fine wares. His most famous books are Late Roman Pottery (1972) and Handbook of Mediterranean Roman Pottery (1997). He was distinguished in 1990 with the Gold Medal Award for Distinguished Archaeological Achievement.