| Marciano della Chiana | |
| Official Name: | Comune di Marciano della Chiana |
| Coordinates: | 43.3°N 58°W |
| Region: | Tuscany |
| Province: | Arezzo (AR) |
| Frazioni: | Badicorte, Cesa, San Giovanni dei Mori |
| Mayor: | Marco Barbagli |
| Area Total Km2: | 23.7 |
| Population Total: | 3430 |
| Population As Of: | 30 September 2017[1] |
| Population Demonym: | Marcianesi |
| Elevation M: | 320 |
| Postal Code: | 52047 |
| Area Code: | 0575 |
Marciano della Chiana is a comune (municipality) in the Province of Arezzo in the Italian region Tuscany, located about 70km (40miles) southeast of Florence and about 20km (10miles) southwest of Arezzo.
Marciano della Chiana borders the following municipalities: Arezzo, Castiglion Fiorentino, Foiano della Chiana, Lucignano, Monte San Savino.
The town is of medieval origins, dating to the Lombard domination in Tuscany; later it was acquired by the commune of Arezzo and then by the Republic of Siena. In 1554 it was the seat of the Battle of Marciano (or Scannagallo).