Pierre Troisgros (born 3 September 1928, in Chalon-sur-Saône) is a French restaurateur, best known for his restaurant Frères Troisgros.
Pierre Troisgros and his brother Jean Troisgros completed an apprenticeship with renowned top chefs in Paris. In 1955, the country restaurant of Pierre and Jean Troisgros won the first Michelin star. Within ten years, it became the most popular restaurant in the region and soon it was one of the best known in France. In 1965, the restaurant, now known as the Frères Troisgros, got the second star, and, in 1968, the third star. In 1972, the brothers were awarded by critics of the Gault Millau with the title "Best Restaurant in the World" award.