Trebbiano is a white grape used to make white wine, and the most common white grape variety in Italy, accounting for around a third of all Italy's white wine.

Despite its ubiquitous nature, the wine produced by the grape is overly acidic and usually flavourless, and so requires great skill to make it into a desirable table wine. However, its high acidity makes it useful for making brandy and it is thus the most widely used variety of the Cognac and Armagnac regions.