Rush to Judgment: A Critique of the Warren Commission's Inquiry into the Murders of President John F. Kennedy, Officer J.D. Tippit and Lee Harvey Oswald is a 1966 book by American lawyer Mark Lane. It is about the assassination of United States President John F. Kennedy and takes issue with the investigatory methods and conclusions of the Warren Commission. The book's introduction is by Hugh Trevor-Roper, Regius Professor of History at the University of Oxford. Although it was preceded by a few self-published or small press books, Rush to Judgment was the first mass market hardcover book to confront the findings of the Warren Commission.

The title of the book was taken from Lord Chancellor Thomas Erskine's defense of James Hadfield, who had attempted to assassinate King George III in 1800. According to Alex Raskin of the Los Angeles Times, "Rush to Judgment opened the floodgate for [Kennedy assassination] conspiracy theories".