Leisel Marie Jones, is an Australian former competition swimmer and Olympic gold medallist. A participant in the 2000 Summer Olympics β at just 15 years old β and the 2004 Summer Olympics, she was part of the gold-medal-winning Australian team in the women's 4Γ100-metre medley relay at the Athens Games in 2004 and a gold medallist for 100-metre breaststroke in the 2008 Summer Olympics in Beijing.