Fabien Lainé (born 15 April 1976) is a French politician of the Democratic Movement (MoDem).

He has represented Landes's 1st constituency in the National Assembly since October 2024, having previously held the seat from July 2017 to June 2022 and August 2022 to August 2023.

[2] He resigned to comply with the law on the Cumulation of mandates and left his place to Raphaëlle Miremon.

[3] He was the substitute candidate for Geneviève Darrieussecq for Landes's 1st constituency at the 2017 National Assembly election.

Following Darrieussecq's appointment to the government on June 21, 2017 he became a member of the National Assembly.