The Azd or Al Azd, are an Arabian tribe. They were a branch of the Kahlan tribe, which was one of the two branches of Qahtan the other being Himyar.
In the ancient times, they inhabited Ma'rib, the capital city of the Sabaean Kingdom in modern-day Yemen. Their lands were irrigated by the Ma'rib Dam, which is thought by some to have been one of the engineering wonders of the ancient world because of its size. When the dam collapsed for the third time in the 1st century AD, a large number of the Azd tribe left Yemen and migrated in many directions.
Azd is also a widely used male name in Yemen.