Sindia () is a comune (municipality) in the Province of Nuoro in the Italian region Sardinia, located about northwest of Cagliari and about west of Nuoro. As of 31 December 2004, it had a population of 1,900 and an area of .
Sindia borders the following municipalities: Macomer, Pozzomaggiore, Sagama, Scano di Montiferro, Semestene, Suni.