William S. Knowles (born June 1, 1917) is an American chemist. He was born in Taunton, Massachusetts.

He shared one half of the Nobel Prize in Chemistry in 2001 with the Japanese chemist Ryoji Noyori for their work on enantioselective catalysed hydrogenation reactions.

He currently resides in St. Louis, Missouri.

1917 births | Living people | American chemists | Columbia University alumni | Nobel Prize in Chemistry winners | Taunton, Massachusetts

William S. Knowles | William S. Knowles | William Knowles | William Standish Knowles | William Standish Knowles | William S. Knowles