The Port of Constanța is located in Constanța, Romania, on the western coast of the Black Sea, 179 nautical miles (332 km) from the Bosphorus Strait and 85 nmi (157 km) from the Sulina Branch, through which the Danube river flows into the sea.

The Greek influence is maintained until the 1st century BC, when the territory between the Danube and the Black Sea was occupied by the Romans.

In the next hundred years the port had a substantial development and the city changes its name to Constanța in honour of the Roman Emperor Constantine I.

[6] In the Byzantine period the evolution of the port is halted due to the frequent invasions by the migratory people, the trade was fading and the traders were looking for other more secure markets like Venice or Genoa but many constructions in the port maintain the name genovese in the memory of the merchants from the Italian city.

The port was finished and first opened in 1909 and had adequate facilities for that time, with 6 storage basins, a number of oil reservoirs, and grain silos.

After the opening of the canal, the port grew very fast and after two decades it covered an area of 3,900 hectares (9,600 acres).

[5] Important cargo quantities are carried by river, between Constanta and Central and Eastern European countries: Bulgaria, Serbia, Hungary, Austria, Slovakia and Germany.

Round-the-clock train services carry high volumes of cargo to the most important economic areas of Romania and Eastern Europe, the Port of Constanța being also an important transport node of the TRACECA Corridor, providing the connection between Europe, Caucasus and Central Asia.

The connection with Corridor IV has a strategic importance, linking the Port of Constanța with the landlocked countries from Central and Eastern Europe.

Connection between storage farms and jetties is done by a 15 km (9.3 mi) underground and overground pipelines network.

[11] The port is also a starting and terminus point for the Pan-European Pipeline designed to the transportation of Russian and Caspian oil to Central Europe.

Both perform a vital function in the overall plan to increase the efficiency of the main port's facilities - and both are facing continuous upgradings in order to meet the growing demands of cargo owners.

[12] The Port of Midia[13] is located on the Black Sea coastline, approx 13.5 nmi (25.0 km) north of Constanța.

The Port of Mangalia[13] is located on the Black Sea, close to the southern border with Bulgaria, and over 260 km (160 mi) north of Istanbul.

This is due to the efficiency of the Constanţa South Container Terminal (CSCT), operated by DP World, and to the natural position of the port with deep water (up to 18.5 m (61 ft)) and a direct link to the Danube.

[22] There is also a private cement terminal operated by a Spanish company Ceminter International with an annual traffic capacity of 1 million tonnes.

[29] Hutchison Whampoa was interested in investing around US$80 million in a new container terminal of 650–700,000 twenty-foot equivalent unit (TEUs) located in Constanța South on a 35 ha (3,800,000 sq ft) plot of land.

[32] The barge terminal has one berth and it is located in Constanța South on the eastern shore of the Danube–Black Sea Canal.

[33] The tugboat terminal has one berth and it is located in Constanța South on the western shore of the Danube–Black Sea Canal.