Duchy of Tuscany
Duchy of Tuscany may refer to the following central Italian territories:

 Tuscia, historical region in Central Italy
 Duchy of Tuscia (576–797), Lombard duchy
 March of Tuscany (812–1197), frontier march of the Holy Roman Empire
 Duchy of Florence (1532–1569)
 Grand Duchy of Tuscany (1569–1859)