Baron Guy Édouard Alphonse Paul de Rothschild (May 21, 1909 - June 12, 2007) was a French banker and member of the Rothschild family. He chaired the de Rothschild Frères bank from 1967 to 1979

He married Alix Schey de Koromla (1911-1982) in 1937, having a son, David René de Rothschild. They divorced in 1956. He married a second time in 1957, to Marie-Hélène van Zuylen van Nyevelt (1927-1996), with whom he also had a son, Édouard de Rothschild.
He was also a renowned horsebreeder as the family owns Haras de Meautry in Normandy. He has produced prominent race horses, the most famous perhaps Exbury,...