Graglia (Piedmontese: Graja) is a comune (municipality) in the Province of Biella in the Italian region Piedmont, located about 60 kilometres (37 mi) northeast of Turin and about 7 kilometres (4 mi) southwest of Biella.

The communal territory includes the Mombarone peak and Lake Ingagna. It is home to the Sacro Monte di Graglia sanctuary.