Nonantola Abbey, dedicated to Saint Sylvester, is a former a Benedictine monastery and prelature nullius in the commune of Nonantola, c.
Pope Pius VII restored it as a monastery on January 23, 1821, with the provision that the prelature nullius attached to it should belong to the Archbishop of Modena, into which the exempt territory was finally absorbed in 1986 to form the Diocese of Modena-Nonantola.