List of Famous people who died at 89

Nikolay Nikolayevich Konstantinov was a leading Soviet and Russian mathematical educator and organizer of numerous mathematics competitions for high school students. He is best known as the creator and chief organizer of the Tournament of the Towns. For his work he was awarded the Paul Erdős award in 1992.

Baron Étienne Cerexhe was a Belgian judge and academic. He was a member of the Belgian Senate from 1985 to 1987, and the Chamber of Representatives from 1988 to 1991. In 2009, Cerexhe was knighted by King Albert II.

William T. Smith was an American wrestler and Olympic champion in freestyle wrestling.

Andries Kinsbergen was a Belgian lawyer and politician.

Major Christopher York was a British Conservative politician.

Princess Marina Petrovna of Russia was a daughter of Grand Duke Peter Nikolaevich of Russia and his wife, Grand Duchess Militza Nicholaevna, born Princess of Montenegro. A great-granddaughter of Tsar Nicholas I of Russia, she was born in Nice and grew up in the last period of Imperial Russia, mostly in Znamenka, her father's summer palace near Peterhof.

Mohamed Diab Al-Attar, known as Ad-Diba,, was a footballer who played for the Al Ittihad Alexandria Club and the Egypt national football team. He later served as an international football referee. In 2007, he was named one of the 200 greatest African footballers.