Varna is the largest city and seaside resort on the Bulgarian Black Sea Coast and in Northern Bulgaria, third-largest in Bulgaria after Sofia and Plovdiv, and 79th-largest in the European Union, with a population of 352,211.

Commonly referred to as the marine (or summer) capital of Bulgaria, Varna is a major tourist destination, business and university centre, seaport, and headquarters of the Bulgarian Navy and merchant marine, as well as the centre of Varna Province and Bulgaria's North-Eastern planning region (NUTS II), comprising also the provinces of Dobrich, Shumen, and Targovishte.

In April 2008, Varna was designated seat of the Black Sea Euro-Region (a new regional organization, not identical to the Black Sea Euroregion), by the Council of Europe.

With the national liberation in 1878, the city, which numbered 25 thousand inhabitants, was ceded to Bulgaria by the Treaty of Berlin; Russian troops entered on July 27. Varna became a front city in the First Balkan War and the First World War; its economy was badly affected by the temporary loss of its agrarian hinterland of Southern Dobruja to Romania (1913-16 and 1919-40). In the Second World War, the Red Army occupied the city in September 1944, helping cement communist rule in Bulgaria.

Over the first decades after liberation, with the departure of most ethnic Turks and Greeks and the arrival of Bulgarians from inland, Northern Dobruja, Bessarabia, and Asia Minor, and later, of refugees from Macedonia, Eastern Thrace and Southern Dobruja following the Second Balkan War and the First World War, ethnic diversity gave way to Bulgarian predominance, although sizeable minorities of Gagauz, Armenians, and Sephardic Jews remained for decades.

One of the early centres of industrial development and the Bulgarian labor movement, Varna established itself as the nation's principal port of export, a major grain producing and viticulture centre, seat of the nation's oldest institution of higher learning outside Sofia, a popular venue for international festivals and events, as well as the country's de facto summer capital with the erection of the Euxinograd royal summer palace (currently, the Bulgarian government convenes summer sessions there). Mass tourism emerged since the late 1950s. Heavy industry and trade with the Soviet Union boomed in the 1950s to the 1970s.

From December 20 1949 to October 20 1956 the city was renamed by the communist government Stalin after Soviet dictator Joseph Stalin.

In 1962, the 15th Chess Olympiad, also known as the World Team Championship, was here. In 1969 and 1987, Varna was the host of the World Rhythmic Gymnastics Championships. From September 30 to October 4, 1973, the 10th Olympic Congress took place in the Sports Palace.

Varna is running for European Capital of Culture for 2019.