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The Banu Ka'b (Arabic: بنو كعب) are an Arab nomadic tribe originating in the Najd region of Arabia, who often raided, then settled various areas of southern and central Ottoman Iraq, in cities such as Basra and Nasariyah, and also across the border in the southernmost region of Khuzestan Province of Persia, particularly near the city of Khorramshahr. From the early 18th century onwards, the Banu Ka'b began converting from Sunni to Shia Islam.
Individuals who are members of or are descended from the tribe often have the surname Kaabi or al-Kaabi. Those from the tribe who reside within Iran often carry the dialectal spelling variant Chaab or Chabi.
Banu Ka'b had their tribe flag as plain yellow banner. They have waged wars with neighbouring nations. For example, a famous naval battle, called Al-Raqah, occurred in the Persian Gulf between Bani Kaab and Kuwait. Bani Kaab were defeated by the Kuwaiti forces.
- The Shi'is of Iraq By Yitzhak Nakash, pg. 27, and Haydari, ‘Unwan al-Majd, pg. 110-15, 118