Herbert Newby McCoy (June 29, 1870, Richmond, Indiana – May 7, 1945, Los Angeles, California) was an American chemist who taught at the University of Chicago and the University of Utah and was the vice-president of Lindsay Light & Chemical Company.
He contributed numerous papers on physical chemistry, radioactivity and rare earths.McCoy and his wife-to-be, chemist Ethel Mary Terry, wrote the three-volume set Introduction to General Chemistry (1919), Laboratory outline of General Chemistry (1920) and Teachers Manual and Notes (1920).