List of Famous people who are 21

Humphrey Dixon is a British film editor.

Maggie McOmie is an American stage and film actress, best known for co-starring with Robert Duvall in George Lucas' 1971 film THX 1138. Though the film received mixed reviews at the time, it has since developed a cult following.

Frances Reid is an American filmmaker, producer and cinematographer known for her documentaries. She has been in filmmaking for three decades. In 1994, she was nominated alongside director Dee Mosbacher for an Academy Award for Best Documentary Short for Straight from the Heart, which explored relationships between straight parents and their gay children. She was again nominated for an Oscar for producing and directing Long Night's Journey into Day (2000).

Freya Patel-Redfearn is an English international badminton player.She has represented England at the Commonwealth Games.

B. M. Rahul Bharadwaj is an Indian badminton player. Trained at the Prakash Padukone Badminton Academy, he was the boys' singles U–15 National Champions in 2014, and won his first international title at the 2019 Uganda International tournament. He later won the 2019 Kenya and Croatian International tournaments.