Graziadio Isaia Ascoli was an Italian linguist.

The Julian March, also called Julian Venetia, is an area of southern Central Europe which is currently divided among Croatia, Italy, and Slovenia. The term was coined in 1863 by the Italian linguist Graziadio Isaia Ascoli, a native of the area, to demonstrate that the Austrian Littoral, Veneto, Friuli, and Trentino shared a common Italian linguistic identity. Ascoli emphasized the Augustan partition of Roman Italy at the beginning of the Empire, when Venetia et Histria was Regio X.