List of Famous people who are 21

Miho Watanabe is a Japanese actress, presenter and former idol. She is a former second generation member of the idol group Hinatazaka46.

Jessica Ho Lok-yiu, known professionally as Sica, is a Hong Kong singer, guitarist, stage actor and cosplayer. She is also one of the Top 40 contestants of the ongoing ViuTV reality talent contest program King Maker IV.

Roy Wang, also known as Wang Yuan is a Chinese singer-songwriter, television host and actor. He was named by Time as one of the 30 Most Influential Teens of 2017. Wang has been an UNICEF Ambassador since 2018. He has set up his own charity foundation Yuan Foundation which focuses on helping the elderly and children.

Yam Madar is an Israeli professional basketball player, who plays for Hapoel Tel Aviv of the Israeli Premier League and the Israeli national team.

Tyrell Terry is an American professional basketball player for the Memphis Hustle, on assignment from the Dallas Mavericks of the National Basketball Association (NBA). He played college basketball for the Stanford Cardinal.

Rhys Herbert, known professionally as Digga D, is a British rapper and songwriter. He gained recognition as part of the UK Drill collective 1011, which was later renamed to CGM. He is considered to be one of the pioneers of the UK drill scene. Some of his music videos have garnered attention among law enforcement, resulting in a Criminal Behaviour Order (CBO) taken against the collective, and he has been in and out of prison during the singles and videos' releases. Digga D was sent to prison three times before the age of 20. He has had five singles that have placed in the UK Singles Chart; his mixtape albums, Double Tap Diaries and Made in the Pyrex, reached No. 11 and 3 on the UK Albums Chart.

Thomas Sabitzer is an Austrian footballer who plays for LASK.

Peter Spears is an American actor, screenwriter and filmmaker. He was born in Kansas City, Missouri, and raised in Overland Park, Kansas. Spears is best known for being a producer on the critically acclaimed 2017 coming-of-age romantic drama film, Call Me by Your Name, which was nominated for the Academy Award for Best Picture. Spears also directed the controversial parodic short film, Ernest and Bertram, which portrayed Sesame Street characters Bert and Ernie as gay lovers; Spears received a cease-and-desist order from Sesame Workshop for copyright violations as a result. Spears helped to develop the television series Nightmare Café and John from Cincinnati.

Leon Klassen is a professional footballer who plays as a left-back for Austrian club WSG Tirol. Born in Germany, he has represented Russia internationally at various youth levels.

Selemon Barega Shirtaga is an Ethiopian long-distance runner who competes primarily in the 5000 metres and 10,000 meters. He won the gold medal at the 10,000 m at the 2020 Tokyo Summer Olympics. He represented his country at the 2017 World Championships finishing fifth in the final. He also won gold medals at the 2016 World U20 Championships and 2017 World U18 Championships. He won a silver medal in the men's 5000 metres at the 2019 World Athletics Championships in Doha, Qatar.