Annaba (, ), informally known as Balad al-Unnâb (, " Jujube Town"), is a city in the north-eastern corner of Algeria near the Seybouse River, located in an eponymous province. With a population of 257,359 (2008), it is the fourth largest city in Algeria. It is a leading industrial centre in eastern Algeria.
Annaba is a coastal city and has undergone significant growth. Annaba has a metropolitan area with a higher population density than the other metropolises of the Algerian coastline such as Oran and the capital Algiers. Much of eastern and southern Algeria seeks the services, equipment, and infrastructure of the city. Economically, it is the centre for various dynamic activities, such as industry, transport, finance and tourism.