Simone Arianne Biles Owens (née Biles; born March 14, 1997) is an American artistic gymnast. Her 11 Olympic medals and 30 World Championship medals make her the most decorated gymnast in history, and she is widely considered the greatest gymnast of all time. With 11 Olympic medals, she is tied with Věra Čáslavská as the second-most decorated female Olympic gymnast, and has the most Olympic medals earned by a U.S. gymnast. At the 2016 Summer Olympics in Rio de Janeiro, Biles won individual gold medals in the all-around, vault, and floor, bronze on balance beam, and gold as part of the United States team, dubbed the "Final Five". At the 2020 Summer Olympics in Tokyo, where she was favored to win at least four of the six available gold medals, she withdrew from most of the competition due to "the twisties", a temporary loss of air awareness while performing twisting elements. She won a silver medal with her team and a bronze medal on the balance beam; the team was nicknamed "Fighting Four" as a tribute to the adversity they faced. At the 2024 Summer Olympics in Paris, she became the first American woman to win two Olympic all-around and vault titles, the first woman of any nation to do so since Věra Čáslavská in 1964 and 1968; silver on floor. She also won gold as part of the United States team, who were nicknamed "Golden Girls". Biles is a six-time World individual all-around champion at the 2013, 2014, 2015, 2018, 2019 and 2023 World Artistic Gymnastics Championships, six-time World floor exercise champion (2013–2015, 2018–2019, 2023), four-time World balance beam champion (2014–2015, 2019, 2023), two-time World vault champion (2018–2019), and was a member of the gold medal-winning United States teams (2014–2015, 2018–2019, 2023).