Daniel A. (Dan) Ninivaggi (born June 27, 1964) is an American lawyer and business executive. Ninivaggi served in various executive positions with Lear Corporation, a U.S.-based Tier 1 automotive supplier. He then served as President and CEO of Icahn Enterprises L.P., the principal investment vehicle of U.S. billionaire Carl C. Icahn, from 2010 to 2014.From February 2014 to March 2017, Ninivaggi was Co-Chief Executive Officer and Co-Chairman of the Board of Directors of Federal-Mogul Holdings Corporation, based in Southfield, Michigan, USA. On March 8th, 2017 Ninivaggi assumed the role of managing partner of the automotive segment of Icahn Enterprises L.P., which owns Federal-Mogul.  He presently serves as CEO of Icahn Automotive Group LLC, owner of automotive distribution and service businesses, including Pep Boys, Auto Plus, AAMCO and Precision Tune.  Ninivaggi has served on the Board of Directors of Hertz Global Holdings, Inc. since 2014.
In January 2017, Pep Boys acquired Just Brakes, a 134-store automotive repair and maintenance chain, which became a wholly owned subsidiary of Pep Boys. In March 2017, Dan A. Ninivaggi, Co-Chief Executive Officer and Co-Chairman of the Board of Directors of Federal-Mogul LLC and Chief Executive Officer of Federal-Mogul Motorparts, became the company’s new CEO.