Ruffia is a comune (municipality) in the Province of Cuneo in the Italian region Piedmont, located about 40 kilometres (25 mi) south of Turin and about 35 kilometres (22 mi) north of Cuneo. As of 1-1-2017, it had a population of 366 and an area of 7.51 square kilometres (2.90 sq mi).

Ruffia borders the following municipalities: Cavallerleone, Cavallermaggiore, Monasterolo di Savigliano, Murello, Scarnafigi, and Villanova Solaro.