Howard P. Willens (born May 27, 1931) is a lawyer and author who served as Assistant Counsel to the Warren Commission from December 1963 to September 1964. In that role, Willens worked with the lawyers and agents conducting the investigation of the assassination of President John F. Kennedy, reviewed the lawyers’ memoranda for submission to members of the commission, and edited the material that became the Report of the commission. His book, "History Will Prove Us Right: Inside the Warren Commission Report on the Assassination of John F. Kennedy", published in 2013, relied on previously undisclosed primary sources to document the methods and strategies underlying the “most massive, detailed and convincing piece of detective work ever undertaken.”