Mia Mainardi

Mía Giuliana Mainardi (born 17 April 2008) is an Argentine artistic gymnast. She is the 2023 Junior World champion on vault.

Mainardi began gymnastics when she was four years old because her older sister also did gymnastics.

Mainardi made her international debut at the 2021 Junior Pan American Championships and won a bronze medal with the Argentine team behind the United States and Brazil. Then at the 2021 South American Junior Championships, she won the silver medal in the all-around behind teammate Isabella Ajalla and a gold medal in the team event.

Mainardi competed at the 2022 South American Youth Games, winning gold in the all-around, vault, and floor exercise. She also won silver with the Argentine team. At the 2022 Junior Pan American Championships, she won a bronze medal with the Argentine team. Individually, she placed fifth in the all-around, eighth on the uneven bars, and seventh on the balance beam. In the floor exercise final, she won the silver medal behind American Tiana Sumanasekera. Then at the Argentine Championships, she won a bronze medal in the all-around. She finished her 2022 season at the Top Gym Tournament in Charleroi, Belgium, winning bronze medals on the vault and floor exercise and placing seventh all-around.

Mainardi was selected to compete at the 2023 Junior World Championships in Antalya, Turkey alongside Emilia Acosta and Isabella Ajalla, and the team finished in fifth place. Mainardi qualified for the all-around final and finished twelfth. In the vault final, Mainardi won the gold medal with an average score of 13.383. She also competed in the uneven bars final where she finished sixth.