The Villa Ephrussi de Rothschild, also called Villa Île-de-France, is a French seaside villa located at Saint-Jean-Cap-Ferrat on the French Riviera. Designed by the French architect Aaron Messiah, it was built between 1907 and 1912 by Baroness Béatrice de Rothschild (1864–1934).
A member of the Rothschild banking family and the wife of the banker Baron Maurice de Ephrussi, Béatrice de Rothschild built her rose-colored villa on a promontory on the isthmus of Cap Ferrat overlooking the Mediterranean Sea. The Baroness filled the mansion with antique furniture, Old Master paintings, sculptures, objets d'art and assembled an extensive collection of rare porcelain. The gardens are classified by the Ministry of Culture as one of the Remarkable Gardens of France, whilst the villa itself has been classified as a monument historique since 1996.
Upon her death in 1934, the Baroness donated the property and its collections to the Académie des Beaux-Arts division of the Institut de France. It is now open to the public.