Fanni Illés (born 1 May 1992) is a Hungarian Paralympic swimmer.

She has been a part of the Hungarian national swimming team since 2006, aged 14, and has participated at three Summer Paralympic Games.

[3][4] 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 Hévíz.

[6] She competed at the 2019 World Para Swimming Championships, winning a gold medal.