Fanni Illés (born 1 May 1992) is a Hungarian Paralympic swimmer. She was born without legs and has webbed hands. She has been a part of the Hungarian national swimming team since 2006, aged 14, and has participated at three Summer Paralympic Games. She competed at the 2020 Summer Paralympics, winning a gold medal.
Illés was advised by doctors to do swimming after her diagnosis of scoliosis aged 12. She started swimming training lessons in the nearby town of HévÃÂz. She was nominated for Hungarian Disabled Sportswoman of the Year in 2019. She competed at the 2019 World Para Swimming Championships, winning a gold medal.