Fossano (Piedmontese: Fossan) is a town and comune of Piedmont, Northern Italy.

Fossano appeared as a commune in 1236, founded by a Guelph league of cities, but in 1251 had to yield to Asti.

Historians agree speaking about "great ditch of the Chiotto" in dialect Ciot, hole or pit.

Rich in mediaeval, Renaissance and Baroque buildings, it is characterized by the ancient portici (arcades), built on both sides of via Roma (the main street of the old town) but also along other streets, such as via Cavour, via Garibaldi, via Barotti, via Muratori.

After serving as jail and barracks, the castle is now the seat of cultural events and houses a regional library.