Diana Maximovna Shnaider (Russian: Диа́на Макси́мовна Шна́йдер, pronounced [dʲɪˈanə mɐˈksʲiməvnə ˈʂnaɪ̯dɛr]; born 2 April 2004) is a Russian professional tennis player. She has career-high rankings of world No. 12 in singles, achieved on 4 November 2024, and No. 37 in doubles, set on 6 January 2025.
Shnaider won women's doubles silver at the 2024 Paris Olympics with partner Mirra Andreeva.