List of Famous people who are 21

Bette Bright is an English rock singer.

Leonardo Campana Romero is an Ecuadorian professional footballer who plays as a forward for Portuguese club Famalicão, on loan from Wolverhampton Wanderers, and the Ecuador national team.

Nicholas William Hamilton is an Australian actor and musician, known for portraying Rellian in Captain Fantastic and Henry Bowers in It and It Chapter Two.

James David Bouknight is an American professional basketball player for the Charlotte Hornets of the National Basketball Association (NBA). He played college basketball for the UConn Huskies.

Abhishek Sharma is an Indian cricketer. He made his List A debut for Punjab in the 2016–17 Vijay Hazare Trophy on 25 February 2017. He made his first-class debut for Punjab in the 2017–18 Ranji Trophy on 6 October 2017.

Wesley David de Oliveira Andrade, or simply Wesley, is a Brazilian professional footballer who plays as right-back for Swiss club Sion, on loan from Italian club Juventus.

Paige Conners is an American-Israeli pair skater. With her skating partner, Evgeni Krasnopolski, she is the 2017 CS Minsk-Arena Ice Star bronze medalist. She competed for Israel at the 2018 Winter Olympics in Figure Skating in pairs skating and a team event in Pyeongchang, South Korea.

Choi Da-bin is a South Korean figure skater. She is the 2017 Asian Winter Games champion and a 5-time South Korean national medalist. She has placed in the top-ten at the 2018 Winter Olympics, the 2017 World Championships, the Four Continents Championships. Earlier in her career, she won two bronze medals during the 2015–16 ISU Junior Grand Prix series in Austria and Latvia. She has placed in the top-ten at the World Junior Championships.

Gregory Rousseau is an American football defensive end for the Buffalo Bills for the National Football League. As a redshirt freshman in 2019, he recorded 15.5 sacks and won all-conference honors and was named the ACC Defensive Rookie of the Year. Rousseau was drafted by the Bills in the first round of the 2021 NFL Draft.

Li Shifeng is a Chinese badminton player. He started playing badminton when he was 6 years old, getting support from his father. Li then practiced in the Jiangxi team when he was in the elementary school, after that went to the Bayi team. At the age of 14, he participated in the National youth team training centre in Shenyang and entered the National second team in 2017. He was part of the Chinese junior team that won the gold medals at the 2017, 2018 World Junior Championships, and 2018 Asian Junior Championships. Li represented his country competed at the 2018 Summer Youth Olympics in Buenos Aires, Argentina, and clinched the gold medal in the boys' singles event.