Fréchet (born August 19, 1944, Burgundy, France) is an American chemist and Professor Emeritus at the University of California, Berkeley.
He is the head of the Division of Materials Synthesis and Materials Science of the Lawrence Berkeley National Laboratory, Director of the Organic and Macromolecular Facility for the Molecular Foundry at the Lawrence Berkeley National Laboratory, and Vice-President for research at King Abdullah University of Science and Technology.
He has authored nearly 900 scientific papers and holds over 70 United States patents.
His research areas include organic synthesis and polymer chemistry applied to nanoscience and nanotechnology with emphasis on the design, fundamental understanding, synthesis, and applications of functional macromolecules.
Fréchet is an elected fellow of the American Association for the Advancement of Science, the American Chemical Society, and the American Academy of Arts and Sciences, and an elected member of the US National Academy of Sciences, the US National Academy of Engineering, and the Academy of Europe (Academia Europaea).