Viktor Mikhailovich Zhdanov (13 February 1914 – 14 July 1987) was a Soviet virologist who played a key role in the Smallpox Eradication Programme. William MacAskill and others have argued that Zhdanov has done "more good for humanity" than any other individual in history.^[1]

In 2020, Zhdanov and William Foege were awarded the Future of Life Award.^[2]