Yannick Agnel (born 9 June 1992) is a French former competitive swimmer who specializes in freestyle events, and is a three-time Olympic medalist. In his Olympic debut at the 2012 Summer Olympics in London, he won gold in the 200-meter freestyle, gold in the 4×100-meter freestyle relay, and silver in the 4×200-meter freestyle relay. He is the current world record holder in the 400-meter freestyle (short course), the European record holder in the 800-meter freestyle (short course), and the national record holder in the 200- and 400-meter freestyle (long course).
Agnel's success have earned him Swimming World's European Swimmer of the Year award in 2012.
Agnel was born in Nîmes in 1992, the son of a nurse and a liberal director of human resources. He was named after French tennis player Yannick Noah. Agnel began swimming at the age of eight after a neighbor spotted his talent and urged his parents to enroll him in a swimming club. He later integrated Skema Business School to study oceanography. He is now in the prestigious french Grande École Paris-Dauphine IX.