Arthur L. Horwich

Arthur L. Horwich (born 1951) is an American biologist and Sterling Professor of Genetics and Pediatrics at the Yale School of Medicine. Horwich has also been a Howard Hughes Medical Institute investigator since 1990. His research into protein folding uncovered the action of chaperonins, protein complexes that assist the folding of other proteins; Horwich first published this work in 1989.

For his scientific work Horwich has been awarded the Gairdner International Award (2004), Louisa Gross Horwitz Prize (2008), Lasker Award (2011), Shaw Prize (2012), Albany Medical Center Prize (2016), and Breakthrough Prize (2020). He is a member of the National Academy of Sciences and the American Academy of Arts and Sciences.