| Ariano nel Polesine | |
| Official Name: | Comune di Ariano nel Polesine |
| Coordinates: | 44.95°N 19°W |
| Region: | Veneto |
| Province: | Rovigo (RO) |
| Frazioni: | Bacucco, Crociara, Crociarone, Gorino Veneto, Grillara, Piano, Rivà, San Basilio, Santamaria in Punta, |
| Mayor: | Luisa Beltrame |
| Area Total Km2: | 80.63 |
| Population Total: | 4267 |
| Population As Of: | 30 April 2017 |
| Population Footnotes: | [1] |
| Population Demonym: | Arianesi |
| Elevation M: | 2 |
| Postal Code: | 45012 |
| Area Code: | 0426 |
thumb|Ariano nel PolesineAriano nel Polesine is a comune (municipality) in the Province of Rovigo in the Italian region Veneto, located about 60km (40miles) southwest of Venice and about 30km (20miles) southeast of Rovigo.
Ariano nel Polesine borders the following municipalities: Berra, Corbola, Goro, Mesola, Papozze, Taglio di Po.