Gaston Redon (28 October 1853 – 20 November 1921) was a French architect, teacher, and graphic artist.
Gaston attended the École des Beaux-Arts in the atelier of Louis-Jules André, and took the Prix de Rome for architecture in 1883.
The rebuilding and expansion of the Pavillon de Marsan (the most northwestern wing of the palace) between 1900 and 1905 to accommodate the Museum of Decorative Arts amounts to his major built work.
Redon was elected to the Académie des Beaux-Arts in May 1914, and, jointly with Alfred-Henri Recoura, ran an architecture atelier at the Ecole.
His students included French architects Henri Marchal, Roger-Henri Expert, and Louis-Hippolyte Boileau, among others.