Hippo Regius is the ancient name of the modern city of Annaba, Algeria. It historically served as an important city for the Phoenicians, Berbers, Romans, and Vandals. Hippo was the capital city of the Vandal Kingdom from 435 to 439 AD. until it was shifted to Carthage following the Vandal capture of Carthage (439).

Annaba, formerly known as Bon, Bona and Bône, is a seaport city in the northeastern corner of Algeria, close to the border with Tunisia. Annaba is near the small Seybouse River and is in the Annaba Province. With a population of about 464,740 (2019) and 1,000,000 for the metropolitan area, Annaba is the third-largest city and the leading industrial center in Algeria.