Paul Elbert Hamm (born September 24, 1982 in Washburn, Wisconsin) is a retired American artistic gymnast. He is a World Champion gymnast and three-time Olympic medalist. He is the 2003 World all-around champion, and he won the all-around competition at the 2004 Olympic Games. He is the most successful American male gymnast, and the only male American gymnast to win all-around at World's and the Olympics.
Hamm is the son of Sandy and Cecily Hamm. His twin brother, Morgan Hamm, is also a gymnast and Olympic medalist. His older sister, Elizabeth (Betsy), is a former member of the USA Gymnastics Senior National Team.
Paul participated at the 2000 Summer Olympics in Sydney. He finished 5th in the team event and 14th in the individual all-around competition. He is a three-time, consecutive US National all-around champion, winning the titles from 2002–2004. In 2003, he became the first American man to win the all-around title at the world championships.