Gonnesa is a comune (municipality) in the Province of Carbonia-Iglesias in the Italian region Sardinia, located about 60 kilometres (37 mi) west of Cagliari and about 14 kilometres (9 mi) northwest of Carbonia, in the Iglesiente subregion.

The town was refounded in the late 18th century by the local feudatory. During the 19th century it's territory was affected by the resumption of mining which contributed significantly to its population growth .