Deane Montgomery (September 2, 1909 – March 15, 1992) was an American mathematician specializing in topology who was one of the contributors to the final resolution of Hilbert's fifth problem in the 1950s.

He served as president of the American Mathematical Society from 1961 to 1962.

Born in the small town of Weaver, Minnesota, he received his B.S.

In 1988, he was awarded the American Mathematical Society Leroy P. Steele Prize for Lifetime Achievement.

He was a member of the United States National Academy of Sciences,[2] the American Philosophical Society,[3] and of the American Academy of Arts and Sciences.