The Kingdom of Italy was a kingdom in Northern Italy in personal union with Napoleon's French Empire. It was fully influenced by revolutionary France and ended with Napoleon's defeat and fall. Its government was assumed by Napoleon as King of Italy and the viceroyalty delegated to his stepson Eugène de Beauharnais. It covered some of Piedmont and the modern regions of Lombardy, Veneto, Emilia-Romagna, Friuli-Venezia Giulia, Trentino, South Tyrol, and Marche. Napoleon I also ruled the rest of northern and central Italy in the form of Nice, Aosta, Piedmont, Liguria, Tuscany, Umbria, and Lazio, but directly as part of the French Empire, rather than as part of a vassal state.

Northern Italy is a geographical and cultural region in the northern part of Italy. The Italian National Institute of Statistics defines the region as encompassing the four northwestern regions of Piedmont, Aosta Valley, Liguria and Lombardy in addition to the four northeastern regions of Trentino-Alto Adige, Veneto, Friuli-Venezia Giulia and Emilia-Romagna.