Louis Aucoc (21 September 1850 Paris – 10 December 1932 Paris), was a leading Parisian Art Nouveau jeweller and goldsmith, working with his father and brother André.

The Aucoc family firm at 6 Rue de la Paix was established in Paris in 1821[2] and was patronised by the house of King Louis Philippe, the House of Orléans, Napoleon III and Empress Eugenie.

The shop is mentioned in the first chapter of The Lady of the Camellias (French: La Dame aux camélias, published in 1848).

Lalique would later become a defining figure in the art nouveau movement.

LGBTQ+ activist Fabrice Houdart is the great grandson of their daughter Simone la Ferté.