| Mondolfo | |
| Official Name: | Comune di Mondolfo |
| Coordinates: | 43.75°N 19°W |
| Region: | Marche |
| Province: | Pesaro e Urbino (PU) |
| Frazioni: | Marotta, Molino Vecchio, Ponterio, Sterpettine, Centocroci, Valle del Pozzo |
| Area Total Km2: | 22.82 |
| Population Footnotes: | [1] |
| Population Total: | 14280 |
| Population As Of: | 31 December 2017 |
| Population Demonym: | Mondolfesi |
| Elevation M: | 144 |
| Postal Code: | 61037 |
| Area Code: | 0721 |
Mondolfo is a comune (municipality) in the Province of Pesaro e Urbino in the Italian region Marche, located about 35km (22miles) northwest of Ancona and about 25km (16miles) southeast of Pesaro, on the Adriatic Sea. Mondolfo borders the following municipalities: Castel Colonna, Fano, San Costanzo, Senigallia, Trecastelli. It is one of I Borghi più belli d'Italia ("The most beautiful villages of Italy").[2]
Human presence is testified by remains from as early as the Neolithic Age. However, the first stable settlement appeared starting from the early 11th century, around a Byzantine castle existing here in the 6th-7th centuries.