Zemunik Donji is a municipality in Croatia in the Zadar County. According to the 2011 census, there are 2,060 inhabitants, 91% of whom are Croats. The municipality of Zemunik Donji is located in Ravni kotari. The area of the municipality is 54.59 km2, and it consists of the settlements Zemunik Donji, Zemunik Gornji and Smoković.