The Banu 'l-Ukhaidhir (Arabic: بنو الأخيضر‎‎) was a dynasty that ruled in Najd and al-Yamamah (central Arabia) from 867 to at least the mid-eleventh century. An Alid dynasty, they were descendents of Muhammad through his daughter Fatimah and his grandson Al-Hasan, and at least one contemporary traveler describes them as having been Shi'ites of the Zaydi persuasion. Their capital was known as al-Khidhrimah, which lay near the present-day city of Al-Kharj in Saudi Arabia.