Roquefort is a sheep milk cheese from Southern France, and is one of the world's best known blue cheeses. Though similar cheeses are produced elsewhere, EU law dictates that only those cheeses aged in the natural Combalou caves of Roquefort-sur-Soulzon may bear the name Roquefort, as it is a recognised geographical indication, or has a protected designation of origin.

The cheese is white, tangy, creamy and slightly moist, with distinctive veins of blue mold. It has a characteristic fragrance and flavor with a notable taste of butyric acid; the blue veins provide a sharp tang. It has no rind; the exterior is edible and slightly salty. A typical wheel of Roquefort weighs between 2.5 and 3 kg (6 and 7 lb), and is about 10 cm (4 in) thick. Each kilogram of finished cheese requires about 4.5 liters of milk to produce. In France, Roquefort is often called the "King of Cheeses" or the "Cheese of Kings", although those names are also used for other cheeses.