Many Iraqis identify more or less strongly with a tribe (العشيرة'ashira), and some feel a stronger loyalty to their clans or tribes than to any national government. Thirty of the 150 or so identifiable tribes in Iraq are the most influential. Tribes are grouped into federations (qabila). Below the level of the tribe, there are the clan (الفخذfukhdh), the house (البيتbeit) and the extended family (الخمسkhams).
On its accession to power in 1968, the Ba'ath party announced its opposition to tribalism (القبليةal-qabaliyya), although for pragmatic reasons, especially during the war with Iran, tribalism was sometimes tolerated or even encouraged.
Dulaim and Shammar are the major tribes in Iraq.
External Links To Map: Major Iraqi Tribes and Clans http://www.globalsecurity.org/military/world/iraq/images/tribes.jpg
Other Families from this region are:
Al suadi (baghdad) Al obaydee (Diala) Al Najim ( Baghdad)