Cahors (ka.ɔʁ) is a red wine made from grapes grown in or around the town of Cahors in the Lot department of southern France. Cahors is an Appellation d'origine contrôlée (AOC) (Controlled designation of origin) associated with part of the South West France wine-region. The dominant grape variety in AOC Cahors wines, Malbec (known locally as "Auxerrois” or "Côt") must make up a minimum of 70% of the wine. Winemakers may supplement the Malbec with up to 30% Merlot and/or Tannat. Marketers may use the designation AOC Cahors only for red wines - they distribute the white and rosé wine produced in the same area under the designation Vin de Pays du Lot instead.
Cahors vineyards comprise , with a planting density of at least 4000 vines per hectare.
Today's wine-growing area lies mainly west of the town of Cahors. The most important places are Mercuès, Parnac, Luzech, Prayssac, Grézels, Puy-l'Éveque and Vire sur Lot - all located in the valley of the Lot river.
The history of Cahors winemaking goes back to the era of Ancient Rome, with vines being planted in the area around 50 BC. Since that time, the vines have remained in the land of Quercy and their history has been combined with that of the region.
The region of Cahors enjoyed a great reputation from the Middle Ages until the late 19th century. In the 13th century, it was shipped to England via Bordeaux by the Cahorsins traders. Later on, the Cahors "black wine" was sold shipped from England to Russia. Similar to many other winemaking regions, Cahors was hit badly by The Great French Wine Blight in the late 19th century, when the vines were attacked in the phylloxera epidemic. In the case of Cahors, this happened in 1883-1885.
In February 1956, Cahors was hit by frosts which wiped out almost all the vineyards of the region, which thus needed to be replanted en masse. In this replanting, Malbec became more dominant than it had been before. Cahors was awarded AOC status in 1971.