‘Abd al-Mu‘īn ibn Musā‘id ibn Sa‘īd (Arabic: عبد المعين بن مساعد بن سعيد) was a sharif of the Zayd clan who briefly served as Sharif and Emir of Mecca on two occasions – first in January 1788, and second during April–July 1803.
[1] He succeeded to the Emirate in January 1788 after the death of his brother Sharif Surur, but he abdicated to his brother Sharif Ghalib within a few days.
[2] He assisted Ghalib during his rule, leading several military expeditions against the Saudi-Wahhabi Emirate of Diriyah.
In April 1803 when Wahhabi forces marched on Mecca, Ghalib appointed Abd al-Mu'in as acting Emir before retreating to Jeddah.
In July 1803 he allowed Sharif Ghalib to enter the city with his army and drive out the Wahhabi garrison.