Languedoc-Roussillon is a large and diverse wine region in the south of France, covering an area that stretches from Nimes and Montpellier in the east, around the Gulf of Lyon to the Spanish border.

As suggested by the double-barreled name, Languedoc-Roussillon was once two independent regions – Languedoc and Roussillon. Although the worlds of wine politics and commerce have enduringly grouped the two together, geography and culture separate them; Languedoc is quintessentially French in character, whereas the strong influences of Spanish and Catalan culture are clear across Roussillon. While Languedoc's vineyards are mostly located on coastal plains, those of Roussillon are either perched on cliff tops or nestled in the foothills of the Pyrenees. However, the two regions have been treated as a single unit so often – and for such a significant period of wine history – that it is now difficult to divide them.

About a quarter of all the wine-producing vines in France are located in Languedoc-Roussillon, contributing to such diverse wines as the sparkling Mauzac-based Blanquette de Limoux, the rich, sweet red wines of Banyuls, and the rosés of the Cotes du Roussillon.