| Aidomaggiore | |
| Official Name: | Comune di Aidomaggiore |
| Native Name: | Aidumajore |
| Pushpin Map: | Italy Sardinia |
| Coordinates: | 40.1667°N 59°W |
| Region: | Sardinia |
| Province: | Oristano (OR) |
| Mayor: | Mariano Salaris |
| Area Total Km2: | 41.21 |
| Population Total: | 450 |
| Population As Of: | 28 February 2017[1] |
| Population Demonyms: | Aidomaggioresi Aidumajoresos |
| Elevation M: | 250 |
| Postal Code: | 09070 |
| Area Code: | 0785 |
Aidomaggiore (Sardinian: Aidumajore) is a comune (municipality) in the Province of Oristano in Sardinia, Italy. Aidomaggiore is located about 110km (70miles) north of Cagliari and about 35km (22miles) northeast of Oristano.
Aidomaggiore borders the following municipalities: Borore, Dualchi, Ghilarza, Norbello, Sedilo, Soddì.