The patron saints of Tronzano Vercellese are Saints Peter and Paul, celebrated on 29 June in the Church of Santi Pietro e Paolo.
Since 2021, the Saint Martin Fair has been held annually, dedicated to the saint because of the end of the agricultural year and harvest, strongly felt in farming areas. The town also holds the church of the Nativity of Mary and the church of Santi Grato e Valentino, as well as the Silvio Piola Park.