Yes, but the one you'll learn and hear spoken most widely is the Tuscan dialect. Anywhere you travel in Italy, you'll be understood if you speak in the Italian commonly taught in schools and used in Italian media. But, with more than 30 regional variations of Italian, some of which are mutually understandable and some that are not, don't panic if you venture into Sicily or the wine region and find yourself struggling to grasp what's being said!