Borghetto di Borbera is a comune (municipality) in the Province of Alessandria in the Italian region Piedmont, located about 110 kilometres (68 mi) southeast of Turin and about 35 kilometres (22 mi) southeast of Alessandria.

Borghetto di Borbera borders the following municipalities: Cantalupo Ligure, Dernice, Garbagna, Grondona, Roccaforte Ligure, Sardigliano, Stazzano, and Vignole Borbera.

In the town are the remainders of an old medieval castle, including a tower and a gate.

The castle collapsed long time ago into the close by river bed due to water erosion and landslides.

[4] The new townhall was built in early 20th century as one of the first reinforced concrete buildings in Italy.