Cyrus Homi Chothia (19 February 1942 – 26 November 2019) FRS was an English biochemist. He was an emeritus scientist at the Medical Research Council (MRC) Laboratory of Molecular Biology (LMB) at the University of Cambridge and emeritus fellow of Wolfson College, Cambridge.
Chothia died on 26 November 2019 at the age of 77.