Banu Yam (Arabic: بنو يام, Banū Yām) is an Arabian tribe that belongs to the Qahtanite branch of Arabian tribes, specifically the group known as Banu Hamdan, and are, therefore, native to southwestern Arabia.
The Yam are notable among the tribes of Saudi Arabia for the majority of its members who follow the small SulaymaniIsma'ili branch of Shi'iteIslam. Religious leadership is currently in the hands of the al-Makramiclan, who joined Yam through alliance some time in the 17th century. Most Yam in Najran are Isma’ili while the Al-Ajman and Al Murrah branches who can be found in Saudi Arabia, Kuwait, Qatar, Bahrain are Sunni. Members of the tribe can be found throughout Saudi Arabia due to migration, particularly the areas around Jeddah and Dammam. Unlike some other tribes of southwestern Saudi Arabia, Yam have traditionally had a large bedouin section, due to the proximity of their territories to the formidable desert known as the Empty Quarter.[2]
They are also different from some of their neighboring tribes in that they are recorded to have repeatedly raided the neighboring region of Najd, reaching as far north as Dhruma near Riyadh during the time of the First Saudi State in 1775, and causing much panic.[3]