List of Famous people born on April 21st

Joseph Vincent McCarthy was a manager in Major League Baseball, most renowned for his leadership of the "Bronx Bombers" teams of the New York Yankees from 1931 to 1946. The first manager to win pennants with both National and American League teams, he won nine league titles overall and seven World Series championships – a record tied only by Casey Stengel. McCarthy was elected to the Baseball Hall of Fame in 1957.

Severina Kojić, better known mononymously as Severina, is a Croatian singer-songwriter and actress. In 2006, the Croatian weekly Nacional listed her among the 100 most influential Croats, calling her "the only bona fide Croatian celebrity".

Friedrich Alexander Hermann Pagenstecher was a German ophthalmologist born in Wallau.

Vincent Scotto was a French composer.

Gong Xiangyu is a female Chinese volleyball player. On club level, she plays for Jiangsu.

Jukka Antero "Julius" Nevalainen is the former drummer in the Finnish symphonic metal band Nightwish.