Earl Long was an American chemical physicist. He served as director of the University of Chicago Institute for the Study of Metals.
Shortly after receiving his Ph.D. from the University of California, Berkeley, Long was recruited to the project site at Los Alamos. While at Los Alamos, he was a project leader for two different groups. He also spent time during the war working in the labs at Columbia University in New York.
After the war, he taught at the University of Chicago and the University of Alabama.