Sancerre is a French wine Appellation d'origine contrôlée (AOC) for wine produced in the area of Sancerre in the eastern part of the Loire valley, southeast of Orléans. Almost all of the appellation lies on the left bank of the Loire, opposite Pouilly-Fumé. It is well regarded for and primarily associated with Sauvignon blanc. Some Pinot noir is also grown, accounting for around 20% of the region's production, making mostly light red wines under the designation of Sancerre Rouge. A rosé style from Pinot noir is also produced in a style similar to Beaujolais, which is produced from the Gamay grape.

French wine is produced all throughout France, in quantities between 50 and 60 million hectolitres per year, or 7–8 billion bottles. France is one of the largest wine producers in the world, along with Italian, Spanish, and American wine-producing regions. French wine traces its history to the 6th century BCE, with many of France's regions dating their wine-making history to Roman times. The wines produced range from expensive wines sold internationally to modest wines usually only seen within France such as the Margnat wines of the post-war period.