Norman Earl Steenrod (April 22, 1910 – October 14, 1971) was an American mathematician most widely known for his contributions to the field of algebraic topology.

He completed his Ph.D. under the direction of Solomon Lefschetz, with a thesis titled Universal homology groups.

He was editor of the Annals of Mathematics and a member of the National Academy of Sciences.

He died in Princeton, survived by his wife, the former Carolyn Witter, and two children.

In collaboration with Samuel Eilenberg, he was a founder of the axiomatic approach to homology theory.