| Monteflavio | |
| Official Name: | Comune di Monteflavio |
| Coordinates: | 42.1167°N 62°W |
| Region: | Lazio |
| Metropolitan City: | Rome (RM) |
| Mayor: | Lanfranco Ferrante |
| Area Total Km2: | 17.2 |
| Population Footnotes: | [1] |
| Population Total: | 1289 |
| Population As Of: | 30 November 2017 |
| Population Demonym: | Monteflaviesi |
| Elevation M: | 800 |
| Saint: | Assumption of Mary |
| Day: | August 15 |
| Postal Code: | 00010 |
| Area Code: | 0774 |
Monteflavio (it|label=[[Romanesco dialect|Romanesco]]|Montefraviu) is a Italian: [[comune]] (municipality) in the Metropolitan City of Rome in the Italian region of Latium, located about 35km (22miles) northeast of Rome.
Monteflavio borders the following municipalities: Licenza, Montorio Romano, Moricone, Palombara Sabina, San Polo dei Cavalieri, Scandriglia.
During the "Polenta" Festival (2nd Sunday in October) it is possible to eat the polenta (the thick maize porridge) with new wines pouring out by stands in the streets and in the main square of Monteflavio.