Malbec is a purple grape variety used in making red wine. The grapes tend to have an inky dark color and robust tannins and are known as one of the six grapes allowed in the blend of red Bordeaux wine. The French plantations of Malbec are now found primarily in Cahors in South West France. It is increasingly celebrated as an Argentine varietal wine and is being grown around the world.

The Malbec grape is a thin-skinned grape and needs more sun and heat than either Cabernet Sauvignon or Merlot to mature. It ripens mid-season and can bring very deep color, ample tannin, and a particular plum-like flavor component to add complexity to claret blends. Sometimes, especially in its traditional growing regions, it is not trellised and cultivated as bush vines (the goblet system).

As a varietal, Malbec creates a rather inky red (or violet), intense wine, so it is also commonly used in blends, such as with Merlot and Cabernet Sauvignon to create the red French Bordeaux claret blend. The grape is blended with Cabernet Franc and Gamay in some regions such as the Loire Valley. Other wine regions use the grape to produce Bordeaux-style blends. The varietal is sensitive to frost and has a proclivity to shatter or coulure.