Lauren Stephanie Mitchell OAM (born 23 July 1991) is an Australian former artistic gymnast. She is the 2010 World champion on the floor exercise and the 2009 World Championships silver medalist on the balance beam and floor exercise. Mitchell is only the second Australian female gymnast to win a medal at the World Championships, and she is the first to win a gold medal. She is the 2010 Commonwealth Games champion in the all-around, uneven bars, and balance beam, and with the Australian team, and she is the 2008 World Cup Final balance beam champion. She also represented Australia at the 2008 and 2012 Olympic Games.

In her first year of senior competition, Mitchell qualified for the balance beam event final at the 2007 World Championships. Then at the 2008 Summer Olympics, she helped the Australian team place sixth, their highest finish ever. She then became the first Australian gymnast to win more than one medal at the same World Championships when she won two silver medals in 2009. The next year, she tied the record for the most gold medals won by a female gymnast at a single Commonwealth Games and became Australia's first female World champion in gymnastics. At her second Olympic Games in 2012, she qualified for the floor exercise final and finished fifth. She won two more Commonwealth medals in 2014, silver with the team and on the floor exercise. Mitchell retired from gymnastics in 2016 as Australia's most decorated gymnast.

Lauren Mitchell was born on 23 July 1991 in Subiaco, an inner suburb of Perth, to Leanne and Graeme Mitchell, and she is the oldest of four siblings. She is of Romanian descent through her mother. She began gymnastics when she was six years old after a gymnastics birthday party.

At the 2005 Australian Junior Championships, Mitchell finished seventh in the all-around, balance beam, and floor exercise and eighth on the uneven bars. She missed the 2006 season due to a hamstring injury.

Mitchell became age-eligible for senior international competition in 2007. She competed at the WOGA Classic in Plano, Texas and helped the Australian team win the bronze medal. Individually, Mitchell placed fourth in the all-around, won the silver medal on the balance beam and the bronze medal on the floor exercise. She then traveled to Kyiv to compete in the Stella Zakharova Cup where the Australian team finished sixth. Individually, Mitchell won the bronze medal in the all-around and the silver medal on the balance beam, and she finished fifth on the uneven bars and seventh on the floor exercise. Then in May at the Australian Championships, she won the gold medal with the Western Australian team and the silver medal in the all-around. She also won the gold medal on the balance beam and the silver medal on the floor exercise, and she placed fifth on the uneven bars and eleventh on the vault.

In July, Mitchell helped the Australian team win a gold medal against Japan in a friendly meet. Individually, she won the bronze medal in the all-around behind Daria Joura and Kōko Tsurumi. She also won the silver medals on the balance beam and on the floor exercise. She was selected to compete at the World Championships alongside Daria Joura, Shona Morgan, Hollie Dykes, and Chloe Sims, and they finished eleventh in the qualification round. Individually, she qualified for the balance beam event final and placed fifth with a score of 15.425. After her debut World Championships, she competed at the DTB Cup in Germany and won a silver medal on the balance beam and a bronze medal on the floor exercise. Her final competition of the season was the Olympic Test Event, where she won the silver medal on the balance beam and placed fourth in the all-around.

Mitchell competed at the Pacific Rim Championships where the Australian team finished fourth behind the United States, Canada, and China. She qualified for the uneven bars final and placed fourth with a score of 15.100. In May, she competed at the Australian Championships where she finished fourth in the all-around, and she helped Western Australia win the silver medal in the team competition behind Victoria. She also placed seventh on the uneven bars, won the silver medal on the balance beam behind Shona Morgan, and finished fourth on the floor exercise. She then competed at the Moscow World Cup where she finished fifth on both the uneven bars and the balance beam.

Mitchell was selected to represent Australia at the 2008 Summer Olympics alongside Georgia Bonora, Ashleigh Brennan, Daria Joura, Shona Morgan, and Olivia Vivian. The team finished sixth in the team final which was the highest team finish in Australian gymnastics history. After the Olympics, she competed at the Stuttgart World Cup and won the silver medal on both the balance beam and the floor exercise. She then won the gold medal on the balance beam at the World Cup Final making her the first Australian gymnast to win a gold medal at the World Cup Final.