Elmer Gertz (September 14, 1906 – April 27, 2000) was an American lawyer, writer, law professor, and civil rights activist. During his lengthy legal career he won some high-profile cases, most notably parole for notorious killer Nathan Leopold and the obscenity trial of Henry Miller's novel Tropic of Cancer, a book published in France but banned in the United States because of its "candid sexuality" in describing the author's life in Paris. In addition to accounts of his cases and career, he also reviewed books and edited a collection of works by Frank Harris, whom he represented as literary agent for a while.