Borgiallo ( Piedmontese ël Borgial ) is a municipality 563 inhabitants ( 31 December 2012) in the Italian province of Turin (TO ), Region Piedmont.

The neighboring municipalities are Frassinetto, Castellamontes, Colleretto Castelnuovo Castelnuovo Nigra, Chiesa Nuova and Cuorgnè.

The municipality covers an area of ​​6 km ². Patron saint of the village is St. Nicholas of Flue.