Buffet is a surname of French origin. People with the surname include:
The Buffet family of musical instrument makers
Bernard Buffet (1928–1999), a French painter
Louis Buffet (1818–1898), a 19th-century French statesman
Marie-George Buffet (born 1949), a French politician
Warren Buffett (born 1930), an American business magnate and philanthropist, described as the most successful investor in the world
Yannick Buffet (born 1979), a French ski mountaineer