Livingston (December 27, 1872 – June 13, 1946) was a German-born American Jewish attorney working in Chicago, Illinois.
Livingston was the founder and first president of the Anti-Defamation League, and the author of the book Must Men Hate (New York and London: Harper & Brothers, 1944).
The League's annual Sigmund Livingston Award, which recognizes individuals for outstanding contributions to furthering civil rights and fighting injustice, is named after him, as is its Sigmund Livingston Fellowship.