The Banu Kaab (Arabic: بنو كعب) are an Arab tribe of Iraqi origin settled mostly in southern Iraq, in cities such as Basra and Nasariyah. From the early 18th century onwards, the Banu Kaab began converting from Sunni to Shia Islam.
Bani Kaab have also settled in western Khūzestān, a province in southwestern Iran, and in its capital Ahvaz. Another branch of the Bani Kaab settled in the areas that are now Oman and the United Arab Emirates.
Individuals who are members of or are descended from the tribe often have the surname Kaabi or al-Kaabi.
Bani Kaab 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 defeated the Kuwaiti forces.
Another branch of the tribe are totally independent from the Arabstan branch. They are located on (Mahhdah) close to (Al-Buraimi) and they were led by Shaikh Obaid bn Jummah Al-muzahim Al-Kaabi. The banu kaab on Qatar and Bahrain were from Mahhdah branch. This branch of the tribe had a war called (Al-Buraimi war) against England and Oman.
- The Shi'is of Iraq By Yitzhak Nakash, pg. 27, and Haydari, ‘Unwan al-Majd, pg. 110-15, 118