Diana Maximovna Shnaider (Russian: Диа́на Макси́мовна Шна́йдер; Russian pronunciation: [dʲɪˈanə ˈʂnaɪ̯dɛr]; born 2 April 2004) is a Russian tennis player. On the ITF Junior Circuit, Shnaider has a career-high combined ranking of No. 3, achieved on 13 December 2021. She won the girls' doubles titles at the 2021 Wimbledon Championships, partnering Belarusian Kristina Dmitruk, and the 2022 Australian Open, partnering American Clervie Ngounoue.