Rustem Enverovych Umerov (Ukrainian: Рустем Енверович Умєров, Crimean Tatar: Rüstem Enver oğlu Ümerov; born 19 April 1982) is a Ukrainian politician, businessman, investor, philanthropist and the current Defence Minister of Ukraine.

Umerov is a former deputy head of the permanent delegation to the Parliamentary Assembly of the Council of Europe, a delegate of the Qurultay of the Crimean Tatar People, and an adviser to former Mejlis of the Crimean Tatar People chair Mustafa Dzhemilev. Since December 2020, Umerov has also co-chaired the Crimea Platform diplomatic initiative.

In September 2023, amidst the Russian invasion of Ukraine, Ukrainian President Volodymyr Zelenskiy named Umerov to replace Oleksii Reznikov as defense minister of Ukraine.