List of Famous people who died at 21

Sid Ahmed Rezala was an Algerian-born French serial killer, dubbed "The Killer of the Trains". He was suspected of killing at least three women in 1999. Arrested in Portugal in early 2000, he confessed the murders to a reporter from the Figaro Magazine. Several weeks later, he committed suicide before he could be extradited to France. He died of asphyxiation after he intentionally set fire to the mattress in his cell while his prison guards were watching football on TV.

Kyle Jean-Baptiste was an American actor. He was the youngest, as well as the first black actor, to play the role of Jean Valjean in Les Misérables on Broadway.

Jahvante Jahqwane Sheldon Smart, known professionally as Smoke Dawg, was a Canadian rapper, singer and songwriter. Smoke Dawg was a part of hip hop collective Halal Gang alongside Puffy L'z, Safe and Mo-G who come together with the Prime Boys to make the supergroup Full Circle. His debut and only studio album Struggle Before Glory was released posthumously on November 29, 2018, and was rated 8/10 by Exclaim!.

Guilherme Gimenez de Souza, simply known as Gimenez, was a Brazilian footballer who last played for Chapecoense. Mainly a right back, he also played as a defensive midfielder.

The Oldenburg Baby is the name given by the German media to Tim, an infant born in Oldenburg, Lower Saxony, Germany on 6 July 1997. Tim was born prematurely in the twenty-fifth week of pregnancy as the result of a failed late-term abortion. Doctors had expected the child would soon die and thus withheld treatment for 9 hours. He became a focus of the debate surrounding abortion, especially late-term abortion, and its legal and ethical consequences.

Jason Johnson, also known as Camoflauge, was an American rapper, famous for his songs "Cut Friends" and "Laying My Stunt Down". He released his final album Keepin It Real in 2002.

Takahiro Itō was a Japanese actor and voice actor. He graduated from the Chiba Prefectural Kōnodai High School and enrolled in the Career Design course of Hosei University. He was attached to Quarter Tone. He was the younger brother of actor Atsushi Itō.

Gundolf Köhler was a German far-right terrorist who planted a bomb at the 1980 Oktoberfest in Munich, killing 13 people and injuring more than 200 in what is known as the Oktoberfest bombing.

Khun Poom Jensen, born Bhumi Jensen, was a grandson of King Bhumibol Adulyadej of Thailand, after whom he was named. He was also a nephew of Vajiralongkorn, the current King of Thailand. He was the son of the King's eldest daughter, Princess Ubolratana Rajakanya, and her American (former) husband Peter Ladd Jensen.

Skye McCole Bartusiak was an American child actress and child model. She appeared in The Patriot (2000), Don't Say a Word (2001), as Rose Wilder in Beyond the Prairie: The True Story of Laura Ingalls Wilder (2002), 24 (2002–03), Boogeyman (2005), and Kill Your Darlings (2006).