Pozzomaggiore () is a comune (municipality) in the Metropolitan City of Sassari in the Italian region Sardinia, located about northwest of Cagliari and about south of Sassari. As of 31 December 2004, it had a population of 2,871 and an area of .
Pozzomaggiore borders the following municipalities: Bosa, Cossoine, Mara, Padria, Semestene, Sindia, and Suni.