Greccio is an old hilltown and comune of the province of Rieti in the Italian region of Lazio, overhanging the Rieti valley on a spur of the Monti Sabini, a sub-range of the Apennines, about 16 kilometres by road northwest of Rieti, the nearest large town.
The actual town of Greccio has been depopulating, and the administrative functions of the comune are now in the frazione of Limiti di Greccio.