| Rio nell'Elba | |
| Coordinates: | 42.8167°N 34°W |
| Region: | Tuscany |
| Province: | Livorno (LI) |
| Comune: | Rio |
| Population Footnotes: | [1] |
| Population Total: | 782 |
| Population As Of: | October 2011 |
| Gentilic: | Riesi |
| Elevation M: | 165 |
| Saint: | St. James |
| Day: | July 25 |
| Postal Code: | 57039 |
| Area Code: | 0565 |
Rio nell'Elba is a frazione of the comune of Rio, in the Province of Livorno in the Italian region Tuscany, located about 130km (80miles) southwest of Florence and about 80km (50miles) south of Livorno.