Predominantly Sunni Islam, a quarter to one-third in Iraq practice Shia Islam 
JuburArabic: جبور (also known as: own as: Jebour, Jebouri Jubour, Jubour, Jaburi, Jabur) is the largest Arab tribe in Iraq that scattered throughout central and northern Iraq. Part of the tribe settled in Hawija and Kirkuk in the eighteenth century. Al-Jiburi, 'Azza, Dulaim, Janabi and 'Ubadi federations are all sub-groups of the Zubaydi tribe which is one of the Yemeni Arab tribal groups of Iraq.
The Jubour were originally Sunni Muslims until the 19th century when a large number of them started to convert to Shi'ism especially in the mid-Euphrates region of southern Iraq.