Norris J. Lacy (born 1940) is an
American scholar focusing on
French medieval literature. He is the Edwin Erle Sparks Professor Emeritus of French and Medieval Studies at the
Pennsylvania State University. He is a leading expert on the
Arthurian legend and has written and edited numerous books, papers, and articles on the topic. In 2014 the International Arthurian Society, North American Branch, presented him an award for Lifetime Service to Arthurian Studies.