Zaraï was a Berber, Carthaginian, and Roman town at the site of present-day Aïn Oulmene, Algeria.

The ruins of Zaraï are called "Henshir Zraïa" and are found inside the municipality of Ain Oulmene.

The frontier post stood at Zarai, the limit in this direction of the area for which the Third Augustan Legion was responsible.

The district between Lambaesis and Zarai has preserved many traces of communities founded by veteran soldiers, who turned to agriculture after their service was over.... From Zarai two great routes ran into Mauretania, one proceeding in a north-westerly direction, and passing through the important city of Sitifis, the other taking a southerly line.

-- James ReidThe Byzantines fortified the city as the western border town of their possessions in Africa.