Posta is a (municipality) in the Province of Rieti in the Italian region of Latium, located about northeast of Rome and about northeast of Rieti. As of 31 December 2004, it had a population of 819 and an area of .
The municipality of Posta contains the frazioni (subdivisions, mainly villages and hamlets) Bacugno, Favischio, Figino, Fontarello, Picciame, Sigillo, Steccato and Villa Camponeschi.
Posta borders the following municipalities: Borbona, Cittareale, Leonessa, Micigliano, Montereale.