Laurence Francis Rooney III (born December 4, 1953) is an American politician and diplomat who is the U.S. Representative for Florida's 19th congressional district. A Republican and supporter of Donald Trump, he served as the United States Ambassador to the Holy See from 2005 until 2008. He is the former CEO of Rooney Holdings (formerly known as Rooney Brothers Company), an investment and holding company based in Naples, Florida.