Donald Charles Winter (born June 15, 1948) is an American businessman who served as United States Secretary of the Navy. A former top executive of Northrop Grumman, he was nominated in 2005 by President George W. Bush, confirmed by the United States Senate, and took the oath of office on January 3, 2006. In January 2009 Defense Secretary Gates requested that Winter remain in office until President Obama picked his successor or to March 13, 2009. He resigned on March 13.