K. Stuart "Stu" Shea (born January 9, 1957) is an American business executive and leader and intelligence professional serving in a leadership capacity to public and private companies, as well as an advisor to government agencies, private equity investors, and academic institutions. Shea is chairman, president and chief executive officer of Peraton, a national security technology company. He is the former president and chief operating officer of Leidos, chief operating officer of Science Applications International Corporation (SAIC), and founder and emeritus chairman of the United States Geospatial Intelligence Foundation.