Annaba (ِArabic عنّابة, formerly Bône) is a city in the north-eastern corner of Algeria near the river Wadi Seybouse and Tunisian border. It is located in the province of Annaba. As of 2004, its population is estimated to be 235,100.

Annaba, which was called Hippo Regius during Roman times, was probably established by the Phoenicians in the 12th century BC. It was a centre of early Christianity. Augustine of Hippo was bishop here from 396 until 430. The city has Christian, Muslim, and Roman buildings.

One of Annaba's most notable institutes is Annaba University . As of 2004, there are over 40,000 students enrolled. There is also an international airport situated in Annaba. It is represented by the IATA airport code AAE.