George Hermann Büchi (August 1, 1921 – August 28, 1998) was a Swiss organic chemist and professor at the Massachusetts Institute of Technology. "Paternòs reaction", known since the early twentieth century, was renamed to the "Paternò–Büchi reaction" based on enhancements made to it by Büchis research group.
Büchi died at the age of 77 of heart failure while hiking with his wife in Switzerland.