Cru is a wine term used to indicate a high-quality vineyard or group of vineyards. It is a French word which was originally used to refer to both a region and anything grown in it, but is now mostly used to refer to both a vineyard and its wines. The term is often used within classifications of French wine. By implication, a wine that displays the name of its cru on its wine label is supposed to exhibit the typical characteristics of this vineyard or group of vineyards. The terms premier cru and grand cru designate levels of presumed quality that are variously defined in different wine regions.

The glossary of wine terms lists the definitions of many general terms used within the wine industry. For terms specific to viticulture, winemaking, grape varieties, and wine tasting, see the topic specific list in the "See also" section below.