Stimigliano is a comune in the Province of Rieti in the Italian region of Latium, located about 45 kilometres north of Rome and about 25 kilometres southwest of Rieti. As of 1 January 2018, it had a population of 2,321 and an area of 11.4 square kilometres. Stimigliano borders the following municipalities: Collevecchio, Forano, Ponzano Romano, Sant'Oreste, Tarano.