Why Famous: Katie Ledecky has won more Olympic swimming medals than any other female swimmer. In 2012 at the London Olympics aged 15 she won the women's 800-metre freestyle. At the 2016 Rio Olympics she was won more medals than any other female athlete at the Games - 4 golds and 1 silver.
Ledecky also has won 14 world championship titles and broken 13 world records.
- 2016-08-12 American swimmer Katie Ledecky's medal tally of 4 golds, 1 silver make her the most decorated US female athlete at one Olympics, highest female of Rio games and 1st swimmer to win 200m, 400m and 800m freestyle at same Olympics since 1968