List of Famous people born on March 21st

Xavier René Louis Bertrand is a French politician who has been serving as president of the regional council of Hauts-de-France since the 2015 regional elections.

Ronald "RJ" Cyler II is an American actor. He is best known for his roles in Me and Earl and the Dying Girl, Power Rangers, I'm Dying Up Here and Scream.

Lucas Edward Britton "Luke" Mockridge is a Canadian-German comedian and television presenter living in Germany.

Sean Michael McDermott is an American football coach who is the head coach for the Buffalo Bills of the National Football League (NFL). He began his NFL coaching career as an assistant for the Philadelphia Eagles in 2001, serving as defensive coordinator from 2009 to 2010, and was also the defensive coordinator of the Carolina Panthers from 2011 to 2016. Following his six seasons with the Panthers, which included a Super Bowl appearance in Super Bowl 50, he was hired as the Bills' head coach in 2017.

Kevin Earl Federline, sometimes referred to as K-Fed, is an American rapper, DJ, actor, television personality, professional wrestler, and fashion model. His career began as a backup dancer; he later became known for a high-profile two-year marriage to American singer Britney Spears and the child custody battle that followed.

Lothar Herbert Matthäus is a German football manager and former player. After captaining West Germany to victory in the 1990 FIFA World Cup where he lifted the World Cup trophy, he was named European Footballer of the Year. In 1991, he was named the first ever FIFA World Player of the Year, and remains the only German to have received the award.

Martina Stoessel Muzlera, known professionally as Tini, is an Argentine singer, songwriter, actress, dancer and model. She began her career by appearing on the Argentine children's television series Patito Feo (2007–2008). She rose to prominence for her lead role as Violetta Castillo in the Disney Channel Latin America original telenovela, Violetta (2012–2015), and afterwards portrayed the same character in the series' sequel film Tini: The Movie (2016).

Sergey Viktorovich Lavrov is a Russian diplomat and politician. In office since 2004, he is the Foreign Minister of Russia. Previously, he was the Russian Representative to the UN, serving in the role from 1994 to 2004.

Karolína Plíšková is a Czech professional tennis player. She is a former world No. 1 in singles, reaching the top of the Women's Tennis Association (WTA) rankings on 17 July 2017 and holding the position for eight weeks. She is currently ranked No. 6 in the world as of October 2020 and has been ranked inside the top 10 continuously since late 2016. On 31 October 2016, she peaked at world No. 11 in the doubles rankings.

Takeru Satoh is a Japanese actor. He is best known for his leading role as Ryotaro Nogami in the Kamen Rider Den-O franchise, and as Himura Kenshin in the live-action Rurouni Kenshin film and its sequels.