Sennori is a comune located in the Italian region of Sardinia. It is situated within the Metropolitan City of Sassari, positioned approximately 7 kilometres (4 mi) northeast of the city of Sassari and about 180 kilometres (110 mi) north of Cagliari.
The municipality covers an area of 31.4 square kilometres (12.1 mi2). As of December 31, 2004, Sennori had a recorded population of 7,298 residents.