Stephen Cook

Stephen Cook OC OOnt
Cook in 2008
Born	Stephen Arthur Cook (1939-12-14) December 14, 1939 (age 84) Buffalo, New York
Alma mater	Harvard University University of Michigan
Known for	NP-completeness Propositional proof complexity Cook–Levin theorem
Awards	Turing Award (1982) Gödel Lecture (1999) CRM-Fields-PIMS prize (1999) John L. Synge Award (2006) Bernard Bolzano Medal (2008) Gerhard Herzberg Canada Gold Medal for Science and Engineering (2012) Officer of Order of Canada (2015) BBVA Foundation Frontiers of Knowledge Award (2015)
Scientific career
Fields	Computer Science
Institutions	University of Toronto University of California, Berkeley
Thesis	On the Minimum Computation Time of Functions  (1966)
Doctoral advisor	Hao Wang
Doctoral students	Mark Braverman[1] Toniann Pitassi Walter Savitch Arvind Gupta Anna Lubiw

Stephen Arthur Cook OC OOnt (born December 14, 1939) is an American-Canadian computer scientist and mathematician who has made significant contributions to the fields of complexity theory and proof complexity. He is a university professor emeritus at the University of Toronto, Department of Computer Science and Department of Mathematics.

He is considered one of the forefathers of computational complexity theory.