Juhaynah, is a nomad tribe of the Arabian Peninsula and the largest clan of Banu Quda'a. Juhaynah are one of the most powerful Arabian tribes that rule important parts of the Hijaz. The Almarwani clan of the Juhaynah tribes are the leaders of the tribe. The clan still live in the Arabian Peninsula, Saudi Arabia mostly in the city of Umluj or Omluj or alshabaha or tabuk They are also present in large numbers in Sudan especially the eastern region due to mass migrations of arab tribes into Sudan during the 11th century.