List of Famous people who are 21

Gobé Gouano is a French professional footballer who currently plays as a midfielder for Ligue 1 side Monaco.

Roberto López Alcaide is a Spanish professional footballer who plays as an attacking midfielder for CD Mirandés, on loan from Real Sociedad.

Frederick Adetokumboh M'Cormack is a Sierra Leonean actor, known for his roles in the television series Lost and Heroes.

Shatha Abdul Razzak Abbousi is an Iraqi women's rights activist. As a member of the Iraqi Council of Representatives, and specifically a member of Iraq's Human Rights Committee, she has worked to pass human rights legislation. She also joined The Pledge for Iraq, a women's rights activist group.

Kelvin Kwarteng Yeboah is an Italian born-Ghanaian professional footballer who plays as a forward for Austrian Bundesliga side Sturm Graz.

Nick Straker is a London-born musician, who had hits in Europe and the US in the late 1970s and early 1980s.

Nelson Franklin is an American actor best known for his television roles in The Millers, Traffic Light, The Office, New Girl, Black-ish, and Veep.

NCT (Korean: 엔시티) is a South Korean boy group formed by SM Entertainment. NCT stands for Neo Culture Technology. The group is divided into multiple sub-units. Since the group's initial introduction by their native label's founder in January 2016, the group consists of 23 members as of April 2021, ranging from their late-teens to mid-twenties and participating in a total of four different sub-units.

Glenda Morejón is an Ecuadorian racewalker. On 27 July 2017, she won the 5000m category of the IAAF World U18 Championships, becoming the second female Ecuadorian athlete to do so.