Bagnolo in Piano (Reggiano: Bagnōl in Piân) is a comune (municipality) in the province of Reggio Emilia in the Italian region Emilia-Romagna, located about 60 kilometres (37 mi) northwest of Bologna and about 8 kilometres (5 mi) northeast of Reggio nell'Emilia.

Bagnolo in Piano borders the following municipalities: Cadelbosco di Sopra, Correggio, Novellara, Reggio Emilia.

Sights include the Torrazzo, a medieval tower which is what remains of the castle destroyed by the French during the War of Spanish Succession, and the medieval Pieve, in the frazione of Pieve Rossa.

It was part of the independent County of Novellara and Bagnolo until 1728, when the state was returned to the hands of Charles VI, Holy Roman Emperor.

The latter transferred them to the Rinaldo III, Duke of Modena (House of Este) in 1737.