Ellis Steinberg was an American Chemist. He was a junior chemist at the Metallurgical Laboratory in Chicago during the Manhattan Project. He was one of seventy Manhattan Project scientists to sign the Szilard Petition.
After the war, Steinberg worked at Argonne National Laboratory. During his tenure there, he served as a senior chemist, director of the chemistry division, and associate director for physical sciences.
Steinberg died on December 22, 1991 in Chicago, IL.