Castellania Coppi is a comune (municipality) in the Province of Alessandria, in the Italian region of Piedmont. It is located about 100 kilometres (62 mi) southeast of Turin and about 30 kilometres (19 mi) southeast of Alessandria.
Until 2019 the municipality was known simply as Castellania. In that year the Piedmont regional council renamed it Castellania Coppi in recognition of the cyclist Fausto Coppi, in preparation for the centenary of his birth.