The Lepontii were an ancient people occupying portions of Rhaetia (in modern Switzerland and northern Italy) in the Alps during the time of the Roman conquest of that territory. The Lepontii have been variously described as a Celtic, Ligurian, Raetian, and Germanic tribe. Recent archeological excavations and their association with the Golasecca culture of Northern Italy may point to a Celtic affiliation, although an amalgamation of Rhaetians (who were partly of Etruscan-related origin) may not be excluded.
The chief towns of the Lepontii were Oscela, now Domodossola, Italy, and Bilitio, now Bellinzona, Switzerland. Their territory included the southern slopes of the St. Gotthard Pass and Simplon Pass, corresponding roughly to present-day Ossola and Ticino.
This map of Rhaetia [1] shows the location of the Lepontic territory, in the south-western corner of Rhaetia. The area to the South, including what was to become the Insubrian capital Mediolanum (modern Milan), was Etruscan around 600-500 BC, when the Lepontii began writing tombstone inscriptions in their alphabet, one of several Etruscan-derived alphabets in the Rhaetian territory.