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Craig Jon Hawker (born 11 January 1964) is an Australian-born chemist. His research has focused on the interface between organic and polymer chemistry, with emphasis on the design, synthesis, and application of well-defined macromolecular structures in biotechnology, microelectronics, and surface science. Hawker holds more than 45 U.S. patents, and he has co-authored over 300 papers in the areas of nanotechnology, materials science, and chemistry. He was listed as one of the top 100 most cited chemists worldwide over the decade 1992–2002, and again in 2000–2010.In 2021, Hawker was elected a member of the National Academy of Engineering for contributions to polymer chemistry through synthetic organic chemistry concepts and the advancement of molecular engineering principles. He is the director of the California Nanosystems Institute and holds a number of other laboratory directorships at the University of California, Santa Barbara.
He was elected a member of the National Academy of Sciences in 2022.