The patron of Chianni is Saint Donatus (san Donato), celebrated on 7 August; the municipality holds the Chiesa di San Donato.
The village calendar includes the Chianni Opera Festival, with operas and concerts, in June and July, a village fair on the first Tuesday after Ferragosto and the sagra del cinghiale (wild boar festival) in November. The municipality also holds the Santuario della Madonna del Carmine.