Brad Williams (mnemonist)

Brad Williams (born c. 1956) is an American man from Prairie du Chien, Wisconsin who is considered by scientists to have one of the best memories in the world and one of the only twenty five people in the world who has been confirmed by researchers as having a condition called hyperthymestic syndrome. He can remember almost every day of his life, easily naming the day of the week, date, month, and year of innumerable personal and public events.

Williams is the author of Triviazoids. He is the subject of the documentary Unforgettable (2010) by his brother Eric Williams (Mad City) and of a part of the episode Super Special of Stan Lee's Superhumans.