The Al Kathiri (Arabic: الكثيري) also known as Alkaseri is a royal family that has had strong influence in the south of the Arabian Peninsula.
It is one of the largest tribes of Banu Hamdan Hadramawt in eastern Yemen and Oman, with populations in Saudi Arabia, Qatar, United Arab Emirates, and East African countries such as Somalia and Kenya and Tanzania as well as Iran mainly concentrated in the most Arabic populated province of the country Khuzestan.
[1] As a result of these long years of wars to expand the influence and gain control, many of the stages and the details of Al Kathiri history and their Sultanate was hidden and did not stand out enough.
[1] Al Kathiri live in several regions in Yemen, Oman, the United Arab Emirates, Saudi Arabia and Qatar.
[2] The most important areas of Al Kathir tribe in Hadhramaut are Seiyoun, Shibam, Tarim, Ned Al Kathir (Quff), Sah, Sheil Djaima, Algarah, Alhazem, Alghurfa, Almasila, Alardh, Aradh Al-Abdullah, Tris, Alghuraf, Mdodh, Redood, Shahar, Eynat, Alhota, Mukalla and Al-Jawf, Thamood, Buhyra, Faret, Al Fez Castle, Algufel, Al Aas Castle, Aredh AlSuqair, Sheil Shibam, Almahjar, Almsial and Wadi Sir, Ajlanyh, Albeda, Jahz, Saleel Al Kathir, Wadi Ben Ali, Wadi Ne'aam, Wadi Sh'houh, Rydat bin Abdel-Wadood, Gosaiar and the coast of Hadramout.