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).

Saint-Jean-Cap-Ferrat is a commune in the Alpes-Maritimes department in the Provence-Alpes-Côte d'Azur region in Southeastern France. In 2012, Cap Ferrat was named the second most expensive residential location in the world after Monaco.