The tribe's history goes back to pre-Islamic times and members reside today in Iraq and neighboring countries such as Syria, Kuwait and Jordan.

The Dulaims are the largest Sunni Arab tribe in Iraq, living on the Euphrates from a point just below Al Hillah and southern Baghdad to Fallujah, Ramadi, al-Qaim, Samarra and Mosul.

Dulaim bedouin lives on both banks of the euphrates river between the Hit and Fallujah and skip this region they are sell their agricultural economy products in Hit, Baghdad and the Levantine cities , while Dulaim bedouin nomads mostly sheep farmers, they own and live in large wide area greatly expanded after the departure of the Al Ubaid tribe from Al-Jazira (about 1815 y), starting from Anah and exceed in the east line of Samarra–Fallujah, up in the north to the urban areas, in the spring Dulaimi nomads camped in the Syrian desert also.

while Nargs bin Al-Kaoud Sheikh of Albu Nimr remained supportive and loyal to the Ottoman Turks until the end of the war although he was their worst enemies in the past.

[5]The Dulaimis originally were Bedouins living between Ramadi and Al-Qa'im, but at the end of the fifteenth century the clans of Dulaim began migration towards the east until they arrived to Fallujah and south of Baghdad.

At the beginning of the 18th century, the Dulaimis had a role in fighting opponents of the Ottoman Empire from tribes and Persians.

They contributed to the stability in political and economic situation and the emergence of institutions of the modern state from army and police and other services especially during the monarchy period and during the rule of president Abdul Salam Arif Al-Jumaili.

Dulaim is the largest tribe in Anbar province, which formed the nucleus of the insurgency against U.S. forces in Iraq.

[citation needed] Hundreds of thousands of Sunnis, including Dulaimis, set up weekly demonstrations in Fallujah and Ramadi in the square of pride and dignity (Al-Bu Farraj area), demanding the release of Sunni detainees and withdrawal of the army from the cities of Anbar.

In December 2013, the government responded by arresting Sunni MP Ahmed al-Alwani[10] and killing some of his relatives from the Dulaim tribe (Albu-Alwaan clan).

The other Dulaimis are spread over the area between Ctesiphon (currently known as Salman Pak) stretching south to Babylon (Al Hillah) and west to Ramadi in Anbar Province and to the north Taji, Samarra and Mosul.