List of Famous people who are 21

Alison L. Booth is an Australian labour economist and novelist who is professor of economics at the Australian National University. She is the author of five novels. These are Stillwater Creek (2010), The Indigo Sky (2011), A Distant Land (2012), A Perfect Marriage (2018) and The Philosopher's Daughters (2020).

Anthony LaMolinara is an American film director, producer and special effects artist.

Todd McMullen is a Cinematographer who started his career in Hollywood working on films including Casino, The Green Mile and Nurse Betty. As Cinematographer, Todd has applied his distinctive look to acclaimed TV projects such as Friday Night Lights, HBO’s The Newsroom and The Leftovers as well as pilots for Quantico, 12 Monkeys, the Netflix Original Series Santa Clarita Diet, Paramount TV's Waco and Universal's Dirty John.

Billy Ray is an American screenwriter and film director. He began writing for television and movies in 1994 with Color of Night. He has written numerous films including Captain Phillips (2013) and Richard Jewell (2019).

Thomas Johnson is a British sound engineer. He has won two Academy Awards for Best Sound and has been nominated for seven more in the same category. He has worked on more than 125 films since 1983.

Eric Barba is a visual effects supervisor for television, film, and commercial advertising.

Park Jung-hyun, professionally known as Xiyeon, is a South Korean actress and singer. A former child actress and model, she trained under Pledis Entertainment for nine years before making her official debut as a member of the girl group Pristin in 2017. From April 2017 to January 2018, she hosted the South Korean music program Show! Music Core with Cha Eun-woo.

Aline Bonetto is a French production designer and set decorator, best known for her work with Jean-Pierre Jeunet on films such as Amélie (2001), A Very Long Engagement (2004), and Micmacs (2009), among others. Her work on the first two of those films each earned her the César Award for Best Production Design, as well as nominations for the Academy Award for Best Art Direction.

Kazuma Kamachi is the pen name of a Japanese author who has published over 100 light novel volumes. He is best known for the creation of the A Certain Magical Index franchise which, as of 2019, has sold over 30 million copies worldwide and has been licensed in North America by Yen Press with the first novel being released in Q4 2014.