The Ghassanids, also called the Jafnids, were an Arab tribe which founded a kingdom which was in place from the third century to the seventh century in the area of the Levant and northern Arabia. They emigrated from South Arabia in the early third century to the Levant. Some merged with Hellenized Christian communities, converting to Christianity in the first few centuries, while others may have already been Christians before emigrating north to escape religious persecution.

The tribes of Arabia or Arab tribes denote ethnic Arab tribes originating in the Arabian Peninsula. These tribes trace their ancestry to one of the two Arab forefathers, Adnan or Qahtan.