Krzysztof "Kris" Matyjaszewski (Polish: [ˈkʂɨʂtɔf matɨjaˈʂɛfskʲi]; born April 8, 1950) is a Polish-American[1] chemist.

He is the J.C. Warner Professor of the Natural Sciences at the Carnegie Mellon University[2] Matyjaszewski is best known for the discovery of atom transfer radical polymerization (ATRP), a novel method of polymer synthesis that has revolutionized the way macromolecules are made.

[9] He received his doctorate from the Center of Molecular and Macromolecular Studies of the Polish Academy of Sciences in 1976 and completed a postdoctoral fellowship at the University of Florida in 1977.

At the same time, he formed a research consortium with various industrial corporations to expand the understanding of controlled radical polymerization, including ATRP, and accelerate the transfer of this technology to different commercial applications.

[14] The same year, Matyjaszewski became an adjunct professor at Polish Academy of Sciences and at the Department of Chemical and Petroleum Engineering of the University of Pittsburgh.

[11] One of the leading educators in the field of polymer chemistry, Matyjaszewski has mentored more than 300 undergraduate, graduate and postdoctoral students since joining Carnegie Mellon.