Istria is a commune in Constanța County, Northern Dobruja, Romania.

It is located between the lower Danube and the Dobruja coast of the Black Sea. The ancient site of Histria is found nearby.

Süleyman Çelebi was murdered there in February 1411.

Villages in the Istria commune:

• Istria (historical names: Caranasuf, Turkish: Karanasuf)
• Nuntași (historical names: Duingi, Turkish: Düğüncü)

Demographics

At the 2011 census, Istria had 2,370 Romanians (99.54%), 6 Tatars (0.25%), 5 others (0.21%).