List of Famous people who are 21

Kei Oshiro is a Japanese footballer currently playing as a centre back for YSCC Yokohama, on loan from Urawa Red Diamonds.

Amy Helen Herring is an American biostatistician interested in longitudinal data and reproductive health. Formerly the Carol Remmer Angle Distinguished Professor of Children's Environmental Health at the University of North Carolina at Chapel Hill, she is now a professor in the Department of Statistical Science and research professor in the Global Health Institute of Duke University. She was the lead researcher on a 2013 study whose data showed many American women were reportedly virgins at the birth of their first child.

Anthony Schwartz is an American football wide receiver for the Cleveland Browns of the National Football League (NFL). He played college football at Auburn. A world-class sprinter during his high school years, Schwartz holds the former world under-18 best in the 100 meters.

Haider Ali is a Pakistani cricketer. He made his first-class debut in September 2019. He made his international debut for the Pakistan cricket team on 1 September 2020.

Ann Li is an American tennis player. She was the runner-up at the 2017 Wimbledon Junior Championships.

Stephen Welsh is a Scottish professional footballer who plays for Scottish Premiership club Celtic, as a defender.

Jayden Daniels is an American football quarterback for the Arizona State University Sun Devils.

Marcus Scribner is an American actor. He is best known for starring as Andre Johnson Jr. on the ABC sitcom Black-ish and voicing the character Bow in the critically acclaimed Netflix animated series She-Ra and the Princesses of Power.

Ichika Osaki is a Japanese actress who is represented by Oscar Promotion. She is best known as Asuna/Ryusoul Pink in the 43rd Super Sentai series Kishiryu Sentai Ryusoulger.

Maxence Caqueret is a French professional footballer, who plays for Ligue 1 club Lyon as a midfielder.