William Paul Byers (born 1943) is a Canadian mathematician and philosopher; professor emeritus in mathematics and statistics at Concordia University in Montreal, Quebec, Canada.
He completed a BSc ('64), and an MSc ('65) from McGill University, and obtained his PhD ('69) from the University of California, Berkeley. His dissertation, Anosov Flows, was supervised by Stephen Smale.[1]
His area of interests include dynamical systems and the philosophy of mathematics.