William Norris Clarke, SJ (1 June 191510 June 2008) was an American Thomist philosopher and Jesuit priest.
He was a president of the Metaphysical Society of America, as well as founder and editor of the International Philosophical Quarterly.
Clarke did not allow his philosophical quest to be limited by traditional interpretations of the philosophy of St. Thomas Aquinas. He insisted that:
He was a major opponent of Neo-scholastic interpretations of St. Thomas and St. Anselm of Canterbury.