List of Famous people who are 21

Aaron Anthony Connolly is an Irish professional footballer who plays as a forward for Premier League club Brighton & Hove Albion and the Republic of Ireland national team.

Mohamed El Amine Amoura is an Algerian professional footballer who plays as a winger for FC Lugano.

İbrahim Kalın is a Turkish bureaucrat and Islamic studies scholar. In 2018, he was appointed as deputy chairman of the Security and Foreign Policy Council of Turkish Presidency and chief adviser to the President of Turkey, Recep Tayyip Erdoğan. He currently serves as the presidential spokesperson and special adviser to the President of Turkey, Recep Tayyip Erdoğan.

Kastriot Imeri is a Swiss footballer who plays as a midfielder for Swiss Super League club Servette and the Switzerland national team.

Phil Gallagher is a British presenter.

Sekou Oumar Doumbouya is a French professional basketball player for the Detroit Pistons of the National Basketball Association (NBA). Listed at 2.03 m and 105 kilograms, he plays both the small forward and power forward positions.

Yan Bingtao is a Chinese professional snooker player. He is the youngest player to win the Amateur World Snooker Championship after defeating Muhammad Sajjad 8–7.

Darius Kinnard Garland is an American professional basketball player for the Cleveland Cavaliers of the National Basketball Association (NBA). He played college basketball for the Vanderbilt Commodores.

Karim A. A. Khan QC is a British lawyer and a specialist in international criminal law and international human rights law. Following his appointment by United Nations Secretary-General António Guterres, he is currently an Assistant Secretary-General of the United Nations and serves as the Special Adviser and Head of the UN Investigative Team for the Promotion of Accountability for Crimes Committed by Da'esh/ISIL in Iraq (UNITAD), which was established pursuant to Security Council Resolution 2379 (2017) to support domestic efforts to hold ISIL (Da'esh) accountable for acts that may amount to war crimes, genocide, and crimes against humanity in Iraq.

Angelica Ross (born 1980/1981 is an American businesswoman, actress, and transgender rights advocate. A self-taught computer coder, she went on to become founder and CEO of TransTech Social Enterprises, a firm that helps employ transgender people in the tech industry.