Samuel E. Wyly, known as Sam Wyly (born October 4, 1934), is an American entrepreneur and businessman, author, philanthropist, and major contributor to conservative campaigns and candidates. In 2006, Forbes magazine estimated his net worth at $1.1 billion. His older brother, Charles Wyly, Jr., had about half his wealth; the two brothers were close with their business affairs, and were often referred to as the "Wyly brothers".