Tristan Lahais (born 11 May 1983) is a French politician of Génération.s who was elected member of the National Assembly for Ille-et-Vilaine's 2nd constituency in 2024.

[1] He has served as vice president of Rennes Métropole since 2020,[1] and was a deputy mayor of Rennes under Nathalie Appéré.

[2] Lahais was born on 11 May 1983 and was raised in Rennes, where his father worked as a librarian and his mother was a secretary.

[3] He joined the Union Nationale des Étudiants de France and the Socialist Party as a student, after Jean-Marie Le Pen qualified for the second round of the 2002 presidential election.

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