List of Famous people who died at 51

Koestono "Tonny" Koeswoyo was an Indonesian rock musician and leader of the music group Koes Plus. Koeswoyo played piano, guitar and keyboard.

Michelle Sima (1963–2015) was a Chinese actress from Hong Kong. Sima is credited with over 25 films.

Vasyl Olexandrovych Sukhomlynsky was a Ukrainian humanistic educator in the Soviet Union who saw the aim of education in producing a truly humane being.

Ilya Aleksandrovich Averbakh was a Soviet film director. His 1972 film, Monologue, was entered into the 1973 Cannes Film Festival.

Metin Kaçan was a Turkish author, who is best known for his novel Ağır Roman, which was translated into German, and a movie, directed by Mustafa Altıoklar (1999), was based on it.

Ivan Ivanovich Safronov was a Russian journalist and columnist who covered military affairs for the daily newspaper Kommersant. He died after falling from the fifth floor of his Moscow apartment building. His apartment was on the third floor. There are speculations that he may have been killed for his critical reporting: the Taganka District prosecutor's office in Moscow initiated a criminal investigation into Safronov's death, and in September 2007, officially ruled his death a suicide.

Mike Stone was an English recording engineer and record producer. Stone worked with Queen, Blue Öyster Cult, Foreigner, Journey, Kiss, Toby Beau, Asia, Lou Reed, Whitesnake, Joe Walsh and others.

Markus Klaer was a German politician, surveying engineer, and member of the Christian Democratic Union (CDU). Klaer served in the Abgeordnetenhaus of Berlin, the city's state parliament, from 2011 until 2016. He returned to the Abgeordnetenhaus from August 1, 2019, until his death on May 28, 2020.

Jean-Pierre Lola Kisanga was a Congolese politician.

Hafid Bouazza was a Moroccan-Dutch writer.