Negru Vodă (former name: Caraomer, Turkish: Karaömer) is a town in Constanţa County, Dobrudja, south-eastern Romania. The town is close to the border with Bulgaria and there is a border crossing linking Negru Voda to the Bulgarian village Kardam.
The name is probably derived from the legendary Radu Negru (also known as Negru Vodă, the "Black Prince"), founder and ruler of Wallachia.
It has an area of 164.9 square kilometres (63.7 sq mi).
The following villages are administered by the town of Negru Vodă:
Although still mentioned in the official documents as part of the township, the village of Grăniceru (historical names: Canlî Ciucur, Turkish: Kanlı Çukur), located at 43°47′34″N 28°15′48″E / 43.792845, 28.263239, is currently deserted.
- 1997: 5,632
- 2000: 5,529
- 2002: 5,566
- 2011: 4,933
At the 2011 census, Negru Vodă had 4,698 Romanians (95.24%), 160 Gypsies (3.24%), 43 Turks (0.87%), 28 Tatars (0.57%), 4 others (0.08%).