Sébastien Lecornu (French: [sebastjɛ̃ ləkɔʁny]; born 11 June 1986) is a French politician who serves as Minister of the Armed Forces in the governments of successive Prime Ministers Élisabeth Borne, Gabriel Attal and Michel Barnier since 2022.
Since leaving The Republicans (LR) in 2017, Lecornu has been a member of Renaissance (RE, formerly La République En Marche!). Lecornu was President of the Departmental Council of Eure from 2015 to 2017. In government, he served as Secretary of State to the Minister of the Ecological and Inclusive Transition (2017–2018), Minister for Local Authorities (2018–2020) and Minister of the Overseas (2020–2022).