List of Famous people who are 21

Robert Leighton is a British film and television editor with more than 30 feature film credits since 1980. He has edited nearly all of the films by film director Rob Reiner, commencing with This Is Spinal Tap in 1984. He has also edited three films with Christopher Guest. His work includes hit comedies and mockumentaries such as This Is Spinal Tap, Best in Show and When Harry Met Sally... as well as classic dramas such as Stand by Me and the Stephen King thriller, Misery, which garnered actress Kathy Bates a "Best Actress" Oscar. He was nominated for the Academy Award for Best Film Editing for the feature film, A Few Good Men (1992).

Olivia Lum Ooi Lin is a Singaporean businesswoman. She is best known for being the founder, group chief executive officer, and president of the Singapore-based Hyflux Group. She also heads the Research and Development function.

Mayu Ishikawa is a Japanese professional volleyball player from Okazaki City, Aichi, Prefecture. She's a member of the Japan Women's National Volleyball Team, as one of its outside hitters. She competed at the 2020 Summer Olympics, in Women's volleyball.

Lon Ethan Bender is an American supervising sound editor, business executive and inventor. Bender won the Academy Award for Best Sound Effects Editing for his work on Braveheart (1995). He has been recognized for numerous other industry awards as well, including Oscar nominations for The Revenant (2015), Drive (2011) and Blood Diamond (2006). Bender is the co-founder of post production sound services company Soundelux.