Roccasicura is a comune (municipality) in the Province of Isernia in the Italian region Molise, located about northwest of Campobasso and about north of Isernia. As of 31 December 2004, it had a population of 610 and an area of .
Roccasicura borders the following municipalities: Carovilli, Forlì del Sannio, Isernia, Miranda, Vastogirardi.