Dubrovnik, historically known as Ragusa, is a city in southern Dalmatia, Croatia, by the Adriatic Sea. It is one of the most prominent tourist destinations in the Mediterranean, a seaport and the centre of the Dubrovnik-Neretva County. In 2021, its total population was 41,562. Recognizing its outstanding medieval architecture and fortifications, UNESCO inscribed the Old City of Dubrovnik as a World Heritage Site in 1979.

The history of the city probably dates back to the 7th century, when the town known as Ragusa was founded by refugees from Epidaurum (Ragusa Vecchia). It was under protectorate of the Byzantine Empire and later under the sovereignty of the Republic of Venice. Between the 14th and 19th centuries, Dubrovnik ruled itself as a free state. The prosperity of the city was historically based on maritime trade; as the capital of the maritime Republic of Ragusa, it achieved a high level of development, particularly during the 15th and 16th centuries, as it became notable for its wealth and skilled diplomacy. At the same time, Dubrovnik became a cradle of Croatian literature. In his letter to Nikola Nalješković (1564), poet Ivan Vidalić named it "crown of Croatian cities".

The entire city was almost destroyed in a devastating earthquake in 1667. During the Napoleonic Wars, Dubrovnik was occupied by the French Empire forces, and then the Republic of Ragusa was abolished and incorporated into the Napoleonic Kingdom of Italy and later into the Illyrian Provinces of France. In the early 19th to early 20th century, Dubrovnik was part of the Kingdom of Dalmatia within the Austrian Empire. Dubrovnik became part of the Kingdom of Yugoslavia immediately upon its creation, and it was incorporated into its Zeta Banovina in 1929, before becoming part of the Banovina of Croatia upon its creation in 1939. During World War II, it was part of the Axis puppet state Independent State of Croatia, before being reincorporated into Socialist Republic of Croatia in Socialist Federal Republic of Yugoslavia.

In 1991, during the Croatian War of Independence, Dubrovnik was besieged by the Yugoslav People's Army for seven months and suffered significant damage from shelling. After undergoing repair and restoration works in the 1990s and early 2000s, it re-emerged as one of the Mediterranean's top tourist destinations, as well as a popular filming location. According to Holidu, Dubrovnik was the most 'over-touristed' destination in Europe during 2023, with 27.4 tourists for each inhabitant. Often called "The Queen of Adriatic" Dubrovnik is considered one of the most popular destinations in the Adriatic and in Europe.