Henri Sauvage (10 May 1873 – 1932) was a French architectural designer.
Sauvage was born in Rouen, France. After studying at the École nationale supérieure des Beaux-Arts in the atelier of Jean-Louis Pascal, he opened a wallpaper shop in Paris for which he got orders from Hector Guimard and Louis Majorelle, he then collaborated with the architect Charles Sarazin from 1898 to 1912, with whom he funded the Société anonyme de logements hygiéniques à bon marché in 1903. He married Marie-Louise Charpentier in 1898. He designed numerous social buildings.
Friend of Hector Guimard, he was both an Art Nouveau and modern architect. Twenty marble mosaics made from Sauvage's cartoons decorate the Art Deco lobby of Carnegie Library of Reims.
From 1928 to 1931, he taught at the "architecture workshop" of the École nationale supérieure des arts décoratifs.