Bunch of Negroamaro grapes
Negroamaro is one of the most heavily planted red grapes in Italy, almost entirely in the southern region of Apulia. The name means "Bitter Black" and this grape lives up to its name. It produces deep-colored, powerful wines with strong hints of tropical spices. See I Love Italian Wine and Food - Tasting a Noble Sicilian Wine for a review of a Negroamaro wine.
Nerello Mascalese is a red grape variety from the Sicily region of southern Italy that makes dark and spicy wines including the DOC Etna Rosso, Etna as in Mount Etna. According to the Greek author Homer, this was the wine that Ulysses used to intoxicate the Cyclops.
Nero d’Avola
Nero d’Avola is the most important red grape in the Sicily region of southern Italy. It makes dark, thick, flavorful reds that often taste of black currants and black pepper.
Nosiola is a white grape from the Trentino-Alto Adige region of northern Italy. It makes highly-acidic dry white wines and sweet wines including the famous Vino Santo.
Nuragus
Nuragus is an ancient white grape of Phoenician origin now widely grown in the Sardinia region of southern Italy. It makes excellent acidic, light white wines. When these grapes are not fully ripe they may be transformed into sparkling wines.