List of Famous people who are 21

Nonna Bella was a Turkish singer of Armenian descent, in the 1970s. In the early 1970s, she became famous with her song "Şimdi Sen Varsın Dünyamda".

Kompakt is a Cologne-based electronic music independent record label and vinyl/CD distributor, owned by Wolfgang Voigt, Michael Mayer and Jürgen Paape. They specialize in microhouse and minimal techno, and are known for their Total compilation series which reached its seventeenth installment in 2017.

Gary S. Halvorson is an American director of television shows, series and film, best known for directing and producing the show, Friends.

Pilar Revuelta is a Spanish Production designer, Art director and Set decorator based in Madrid. Along with production designer Eugenio Caballero, she won an Oscar for Best Achievement in Art Direction in 2007 for Film director Guillermo del Toro's movie Pan's Labyrinth. Revuelta and Caballero also received a BAFTA nomination for Production Design for Pan's Labyrinth.

Pei-Yuan Wei is a Taiwanese-American businessman who created ViolaWWW, the first popular graphical web browser.

Michael Herbick is an American sound engineer. He has been nominated for five Academy Awards in the category Best Sound. He has worked on over 90 films since 1988.

Stray Kids is a South Korean boy band formed by JYP Entertainment through the 2017 reality show of the same name. The group is composed of eight members: Bang Chan, Lee Know, Changbin, Hyunjin, Han, Felix, Seungmin, and I.N.

Michael Kanfer is a visual effects artist who is best known for his work on Titanic and Apollo 13.

Gary Lee Miller is a professor of Computer Science at Carnegie Mellon University, Pittsburgh, United States. In 2003 he won the ACM Paris Kanellakis Award for the Miller–Rabin primality test. He was made an ACM Fellow in 2002 and won the Knuth Prize in 2013.