Luni is an abandoned town and the name of a frazione of the comune (municipality) of Ortonovo, province of La Spezia, in the easternmost end of the Liguria region of northern Italy. It gives its name to Lunigiana, a region spanning eastern Liguria and northern Tuscany (province of Massa-Carrara). Points of interest include remains of the elliptical Roman amphitheatre (1st century AD) and the Archaeological Museum.