Louis Puech (1 May 1851, in , Bozouls, Aveyron – 15 July 1947, in Aubignac, Aveyron) was a député of the French Third Republic and Minister of Public Works in the second government of Aristide Briand from 3 November 1910 to 24 February 1911. During his 30 years in office he was inscribed with the group of Républicains de gauche. He was the brother of the sculptor Denys Puech, director of the Villa Médicis (1921–33).