Tulcea is a city in Northern Dobruja, Romania. It is the administrative center of Tulcea County, and had a population of 65,624 as of 2021. One village, Tudor Vladimirescu, is administered by the city. It is one of six Romanian county seats lying on the Danube river.

Northern Dobruja is the part of Dobruja within the borders of Romania. It lies between the lower Danube River and the Black Sea, bordered in the south by Southern Dobruja, which is a part of Bulgaria.