Vidin (Bulgarian: Видин, archaically spelled as Widdin in English) is a port town on the southern bank of the Danube in northwestern Bulgaria. It is close to the borders with Serbia and Romania, and is also the administrative centre of Vidin Province, as well as of the Metropolitan of Vidin (since 870). As of February 2011, the town has a population of 47,138 inhabitants.

An agricultural and trade centre, Vidin has a fertile hinterland renowned for its wines.

Vidin is the westernmost important Bulgarian Danube port and is situated on one of the southernmost sections of the river. A ferryboat complex, linking Vidin with Calafat on the opposite side of the river, is located 2 km from the town. The complex is to be replaced by the Vidin-Calafat Bridge probably in the year 2012.

Vidin is the 19th town by population in Bulgaria, but serious demographic problems have been experienced in the area during the last two decades. The number of the residents of the city reached its peak in the period 1988-1991 when exceeded 65,000. The following table presents the change of the population after the liberation of the country in 1878.

Coordinates: 43°48′N 22°41′E / 43.8°N 22.683°E / 43.8; 22.683

Vidin Province (Bulgarian: Област Видин) is the northwesternmost province of Bulgaria. It borders Serbia to the west and Romania to the northeast. Its administrative centre is the city of Vidin on the Danube river. The area is divided into 11 municipalities. As of December 2009, the province has a population of 108,067 inhabitants.

There are remains of many castles, some of which are Baba Vida, one of the last Bulgarian strongholds during the Ottoman invasion and the Belogradchik fortress.

The Vidin Province contains 11 municipalities (singular: oбщина, obshtina - plural: oбщини, obshtini). The following table shows the names of each municipality in English and Cyrillic, the main town (in bold) or village, and the population of each as of December 2009.

The territory of the province includes the most western parts of the Danubian Plain and Stara Planina, while the Danube forms the border with Romania. The slopes of Stara Planina are covered with dense forests, lush meadows and boasts the majestic rock phenomena, the Belogradchik Rocks. There are around 80 caves situated close to the border with Serbia, the most famous being the Magura Cave, which known with its cave painting from 10,000 BC. There is also a lake in the proximity of the cave.