| Villamassargia | |
| Official Name: | Comune di Villamassargia |
| Native Name: | Bidda Matzràxia |
| Pushpin Map: | Italy Sardinia |
| Coordinates: | 39.2833°N 46°W |
| Region: | Sardinia |
| Province: | South Sardinia |
| Mayor: | Francesco Porcu |
| Area Total Km2: | 91.5 |
| Population Total: | 3705 |
| Population As Of: | 31 May 2007[1] |
| Elevation M: | 121 |
| Postal Code: | 09010 |
| Area Code: | 0781 |
Villamassargia, Bidda Matzràxia, Bidda Massàrgia (agrarian town) in sardinian language, is a comune (municipality) in the Province of South Sardinia in the Italian region Sardinia, located about 40km (30miles) west of Cagliari and about 20km (10miles) northeast of Carbonia.
Villamassargia borders the following municipalities: Domusnovas, Iglesias, Musei, Narcao, Siliqua.