List of Famous people who are 21

Rémy Card is a French software developer who is credited as one of the primary developers of the Extended file system (ext) and Second Extended file system (ext2) for Linux.

Mike Varney is an American musician, record producer, music publisher and impresario. He is the founder of the Shrapnel Label Group, which includes Shrapnel Records, Tone Center Records and Blues Bureau International. He also has a 50% stake in Magna Carta Records, a New York-based label. Amazon.com currently lists over 790 albums as being released by record labels founded or owned by Mike Varney. He is often credited with being the individual most responsible for popularizing the mid-1980s shred guitar boom, and has continuously specialized in producing highly acclaimed musicians within the genres of instrumental rock, hard rock, jazz, jazz fusion, blues, blues-rock, progressive metal and speed metal.

James Strong is a British television and film director and writer, best known for his work on Broadchurch for which he was BAFTA-nominated for Best Director Fiction 2015. He trained at Granada TV and has directed episodes of the shows Holby City and Doctors, as well as seven episodes of Doctor Who and two episodes of its spin-off series Torchwood. His work on the Doctor Who episode "Voyage of the Damned" won him a BAFTA Cymru award for Best Director in 2008.

Frank Lupo was an American television writer and producer who created or co-created many successful TV series from the 1970s to the 1990s. In collaboration with Stephen J. Cannell, Lupo created such shows as The A-Team, Renegade, Riptide, Wiseguy and Hunter. He also served as the executive producer for Walker, Texas Ranger during its first full season.

Mark Goldblatt is an Academy Award nominated American film editor and film director and president emeritus of the American Cinema Editors.

Jesse Warn is an American television director.