Sant'Oreste is a comune (municipality) in the province of Rome in the Italian region Lazio, located about 35 km north of Rome. It faces the Monte Soratte, which houses a Natural Preserve with the same name.
The first mention of Sant'Oreste is made by Benedict of Soratte (Benedetto del Soratte) in his Chronicon in 747 AD, in which he mentions Curtis Sancii Heristi. One source states that the toponym derives from the family of the Aristi or Edisti. A member of this family, Saint Orestes (Edistus, Sant'Edisto, Sant'Oreste) was martyred for his faith around 68 AD. Linguistic corruptions transformed the name from Sanctus Edistus to Sanctus Heristus, Santo Resto, San Tresto, Sant'Oreste.