The Jaff tribe, (Kurdish: جاف) is one of the largest Kurdish tribal confederations. The Jaff tribes of Iraq used to be called Muradi while those of Iran where called Javānrudi. Their heartland is between Sulaymaniyah to Sanandaj. The Jaff tribes predominantly adhere to the Shafi'i school, with many Naqshbandi and Qadiriyya followers. It is a dynasty that originated in the year 1114 by Zaher Beg Jaff. Other important leaders were Mohamed Pasha Jaff, Lady Adela, Osman Pasha Jaff, and Mahmud Pasha Jaff. Their ancestral home is Sherwana Castle. The Ottoman Empire bestowed on them the name Pasha, a noble title, in the 1700s. They are the biggest Kurdish tribe in the Middle East with approximately 4 million people, and they speak Babani Sorani.

The Jaff tribe lives in the following cities and towns: Helebce, Kelar, Silêmanî, Ravansar, Sine, Ciwanrro, Selas-bawecanî, Kirmaşan, and Xaneqîn.

The Jaff tribal confederation was formed in the early 17th century. They're not mentioned in Sharafnama. Their earliest mention was in 17 May 1639, in the Ottoman-Iranian treaty. The Jaff tribal confederation were nomadic pastoralist shepherds up until the 20th century. By the end of the 17th century, the main portion of the Jaff tribe fled from the Kermanshah and Sanandaj regions, that were under Ardalan control. The Jaff tribe came into conflict with Ardalan authority. After a battle in which the Jaff tribe were defeated by Ardalanids, their tribal chief and his son were captured and executed. The majority of Jaff tribes fled to Baban territory, where they were given protection and were allowed to settle and to graze their flocks from South of Sulaimanyah all the way to Khanaqin. Those Jaff tribes that remained in Ardalan territory joined the Guran tribal confederation.

The West began ties with the Jaff tribe during World War I, when Ely Bannister Soane established contact. After the war, the tribe opposed Sheikh Mahmud Barzanji, as well as Great Britain's failure to grant Kurdish autonomy in Iraq. At the beginning of the 20th century, the tribe controlled one ninth of Iraq along with the communication system of the country. In 1933, about 100,000 rifles were in the hands of the tribe, contrasting with only 15,000 held by the newly established Iraq. During this period, the tribe became sedentary.

The Jaff tribes are majority Sorani-speakers, but those near Gurani-speaking and Southern Kurdish-speaking tribes have adopted many elements of their dialect. The Jaff princes from 17th-19th century were Gurani-speakers and patrons of Gurani literature.