Max August Zorn was a German-born American mathematician; he was born on June 6, 1906 and died on March 9, 1993.
He was an algebraist, group theorist, and numerical analyst.
He is famous for Zorn's lemma, a powerful tool in set theory that is applicable to a wide range of mathematical constructs such as vector spaces, ordered sets, etc.
He was a professor at Indiana University from 1946 until his death.