| Sergey Leonov | |
| Office: | Member of the State Duma for Smolensk Oblast |
| Term Start: | 12 October 2021 |
| Predecessor: | Olga Okuneva |
| Constituency: | Roslavl (No. 176) |
| Office1: | Senator from Smolensk Oblast |
| Term Start1: | 27 September 2018 |
| Term End1: | 6 October 2021 |
| Successor1: | Irina Kozhanova |
| Birth Name: | Sergey Leonov |
| Birth Date: | 9 May 1983 |
| Birth Place: | Suvorov, Tula Oblast, Russian SFSR, Soviet Union |
| Party: | Liberal Democratic Party of Russia |
| Education: |
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Sergey Dmitrievich Leonov (ru|Сергей Дмитриевич Леонов; born 9 May 1983) is a Russian politician from the ultranationalist Liberal Democratic Party. He has represented Roslavl constituency in the State Duma since the 2021 election.[1]
Sanctioned by the United Kingdom in March 2022 for actions by Russia in Ukraine.[2]
On 20 April 2022, during the Russian invasion of Ukraine, he proposed to forcibly take blood from Ukrainian war prisoners.[3]