Mark Lawrence Wolf (born November 23, 1946) is a Senior Judge for the United States District Court for the District of Massachusetts and founder and chair of Integrity Initiatives International. In 1985, Wolf was nominated to the U.S. District Court by the President, confirmed by the Senate, and took office. In 2006, he became Chief Judge of the Court of Massachusetts and served in the position until 2013. He was also a member of the Judicial Conference of the United States, having previously served on its committees on Criminal Law, the Rules of Criminal Procedure, and Codes of Conduct. On January 1, 2013, Wolf took Senior Status. As a Senior Judge, Wolf continues to preside over a range of criminal and civil cases.