Pietrabruna (Ligurian: Priabruna or Prebuna) is a comune (municipality) in the Province of Imperia in the Italian region Liguria, located about 100 kilometres (62 mi) southwest of Genoa and about 11 kilometres (7 mi) west of Imperia. As of 31 December 2004, it had a population of 568 and an area of 9.9 square kilometres (3.8 sq mi).

Pietrabruna borders the following municipalities: Castellaro, Cipressa, Civezza, Dolcedo, Pompeiana, and Taggia.

Demographic evolution