Venetian or Venetan is a Romance language spoken as a native language by over two million people, mostly in the Veneto region of Italy, where most of the five million inhabitants can understand it. It is sometimes spoken and often well understood outside Veneto, in Trentino, Friuli, Venezia Giulia, Istria, and some towns of Dalmatia, totalling 6–7 million speakers. The language is called vèneto or vènet in Venetian, veneto in Italian; the variant spoken in Venice is called venexiàn/venesiàn or veneziano, respectively. Although referred to as an Italian dialect (Ven diałeto, It dialetto) even by its speakers, it is in fact a separate language, not a dialect of Italian. Venetian differs both in grammar, phonetics, and vocabulary. It is usually classified as a Western Romance language, a branch of Romance to which Italian does not belong. Some authors include it among the Gallo-Italic languages, but by most authors, it is treated as separate. Typologically, Venetian has little in common with the Gallo-Italic languages of northwestern Italy, but shows some affinity to nearby Istriot.
Venetian is not closely related to Venetic, an extinct Indo-European language that was spoken in the Veneto region until about the 1st century BC. (Wikipedia)