List of Famous people who are 21

Frank A. Montaño is an American re-recording mixer. He has been nominated for nine Academy Awards for Best Sound. He has worked on nearly 145 films since 1987.

Louis Castle is an American video games designer. He is known for co-founding Westwood Studios, designing the PC game Blade Runner, and collaborating with Steven Spielberg on the Boom Blox and Boom Blox Bash Party video games for the Nintendo Wii console based on Spielberg's design ideas.

Dan Sudick is a special effects supervisor. Sudick and his fellow visual effects artists were nominated for an Academy Award for Best Visual Effects for Master and Commander: The Far Side of the World, War of the Worlds, Iron Man, Iron Man 2, The Avengers, Iron Man 3, Captain America: The Winter Soldier, Guardians of the Galaxy Vol. 2, Avengers: Infinity War and Avengers: Endgame.

William B. Kaplan is an American sound engineer. He has been nominated for seven Academy Awards in the category Best Sound. He has worked on over 80 films since 1972.

Andy Paul is a Greek Cypriot singer and songwriter. He represented Cyprus with the song "Anna Maria Lena" in the Eurovision Song Contest 1984 in Luxembourg.

Korapat Kirdpan, nicknamed Nanon, is a Thai television actor. He is best known for his leading roles in GMMTV's Senior Secret Love: My Lil Boy (2016), My Dear Loser: Edge of 17 (2017), The Gifted (2018), Blacklist (2019), Turn Left Turn Right (2020), and The Gifted: Graduation (2020)