Dialects of Italian are regional varieties (Tuscan, Central Italian) which are closely related to Standard Italian, while the terms Dialects of Italy is suggested for those idioms, such as Neapolitan, Sicilian, and Gallo-Italian languages which show considerable differences in grammar, syntax and vocabulary.

The dialects of Italian identified by the Ethnologue (An encyclopedic reference work cataloging all of the world’s 6,912 known living languages) are: Piedmontese, Valdôtain (Valdoten), Lombard, Ticinese, Venetian, Talian, Emiliano-Romagnolo, Ligurian, Tuscan (the base of modern Standard Italian), Corsican, Central Italian dialects (like Umbrian, Marchigiano, Romanesco, Laziale, Abruzzese, Molisano), Inner Southern Italian dialects, Pugliese, Neapolitan, Sicilian, Calabrian.

Many of the so-called dialects of Italian spoken around the country are different enough from standard Italian to be considered separate languages by most linguists.