The patron saint of Bagnolo Piemonte is Saint Peter in Chains, celebrated on 29 June.
Every year, on the eve of the Assumption, a Marian procession winds through the whole hamlet. In the hamlet of Villar, once called Villaro, the patronal feast «la Carminela» is dedicated to the Madonna del Carmine: until a few years ago, Saint John the Baptist was also celebrated there, since the parish has two patron saints. The municipal territory also holds the Sanctuary of Maria Vergine Assunta and the Sanctuary of the Madonna della Neve.