Christophe Lejeune is a French politician representing La République En Marche! He was elected to the French National Assembly on 18 June 2017, representing the department of Haute-Saône.In parliament, Lejeune serves on the Defense Committee.
In addition to his committee assignments, he is a member of the French-Belarusian Parliamentary Friendship Group.In November 2019, 20 members of the yellow vests movement tried to force open the door of Lejeune’s house in the Haute-Saône.