List of Famous people who are 90

Hamilton Othanel Smith is an American microbiologist and Nobel laureate.

Yaakov Ziv is an Israeli electrical engineer who, along with Abraham Lempel, developed the LZ family of lossless data compression algorithms.

Bryan John Birch FRS is a British mathematician. His name has been given to the Birch and Swinnerton-Dyer conjecture.

Robert Merkulov is a Russian former speed skater who competed for the Soviet Union in the 1956 Winter Olympics.

Walter Francis "Buddy" Davis was an American athlete. After winning a gold medal in the high jump at the 1952 Olympics he became a professional basketball player.

Frederick Phillips "Fred" Brooks Jr. is an American computer architect, software engineer, and computer scientist, best known for managing the development of IBM's System/360 family of computers and the OS/360 software support package, then later writing candidly about the process in his seminal book The Mythical Man-Month. Brooks has received many awards, including the National Medal of Technology in 1985 and the Turing Award in 1999.

Haitham al-Maleh is a Syrian human rights activist and former judge. He is a critic of the current Syrian government under Bashar al-Assad and has been imprisoned by the Syrian government because he was calling for constitutional reforms. Maleh became an important opposition figure in the Syrian Civil War.