Giurgiu is a county (județ) of Romania on the border with Bulgaria, in Muntenia, with the capital city at Giurgiu.

Giurgiu is a city in southern Romania. The seat of Giurgiu County, it lies in the historical region of Muntenia. It is situated amongst mud-flats and marshes on the left bank of the Danube facing the Bulgarian city of Ruse on the opposite bank. It is one of six Romanian county seats lying on the Danube river. Three small islands face the city, and a larger one shelters its port, Smarda. The rich grain-growing land to the north is traversed by a railway to Bucharest, the first line opened in Romania, which was built in 1869 and afterwards extended to Smarda. In the past, Giurgiu exported timber, grain, salt and petroleum, and imported coal, iron, and textiles.