Baron Guy Édouard Alphonse Paul de Rothschild was a French banker and member of the Rothschild banking family of France. Between 1967 and 1979, he was the chairman of the French Banque Rothschild, nationalized by the French government in 1982, and maintained investments in other French and foreign companies, including Imerys. He was named to the International Best Dressed List Hall of Fame in 1985.

The Rothschild banking family of France is the French branch of the Rothschild family. It was founded in 1812 by James Mayer de Rothschild (1792–1868) in Paris, which was then part of the First French Empire. He was sent there from his home in Frankfurt by his father, Mayer Amschel Rothschild (1744–1812). Wanting his sons to succeed on their own and to expand the family business across Europe, Mayer Amschel Rothschild had his eldest son remain in Frankfurt, while his four other sons were sent to different European cities to establish a financial institution to invest in business and provide banking services. Endogamy within the family was an essential part of the Rothschild strategy in order to ensure control of their wealth remained in family hands.