John Davis Porcari (born December 14, 1958) is an American government official who served as United States deputy secretary of transportation and is currently serving as the Port Envoy to the White House Supply Chain Disruptions Task Force. He was nominated by the Obama administration in April 2009 and confirmed by the Senate on May 21, 2009. Porcari resigned from his position as Deputy Secretary on December 27, 2013.