Almanzor, chief minister of the Umayyad Caliphate of Córdoba, Spain
Abu ʿĀmir Muḥammad ibn ʿAbdullāh ibn Abi ʿĀmir al-Maʿafiri (Arabic: أبو عامر محمد بن عبد الله بن أبي عامر المعافري), nicknamed al-Manṣūr (Arabic: المنصور, "the Victorious"), usually simply called Almanzor (c. 938 – 8 August 1002), was a Muslim Arab Andalusi military leader, statesman. As the chancellor of the Umayyad Caliphate of Córdoba and hajib (chamberlain) for the weak Caliph Hisham II, Almanzor was the de facto ruler of Islamic Iberia.

Born in an alqueria on the outskirts of Torrox to a family of Yemeni Arab origin with some juridical ancestors, ibn Abi ʿĀmir left for Córdoba when still young to be trained as a faqīh. After a few humble beginnings, he joined the court administration and soon gained the confidence of Subh, mother of the children of Caliph Al-Hakam II. Thanks to her patronage and his own efficiency, he quickly expanded his role.During the caliphate of Al-Hakam II, he held several important administrative positions, including director of the mint (967), administrator for Subh and her children, administrator for intestate inheritances, and quartermaster for the army of General Ghalib ibn Abd al-Rahman (973). The death of the caliph in 976 marked the beginning of the domination of the Caliphate by this functionary, which continued beyond his death with the government of two of his sons, Abd al-Malik al-Muzaffar and Abd al-Rahman Sanchuelo, up to 1009. As chamberlain of the caliphate (from 978), he exercised extraordinary power in the al-Andalus state, throughout the Iberian peninsula and in part of the Maghreb, while Caliph Hisham II was reduced almost to a figurehead status.His portentous rise to power has been explained by an insatiable thirst for dominance, but historian Eduardo Manzano Moreno warns that "it must be understood within the framework of the complex internal struggles that developed within the Umayyad administration." Deeply religious, he received the pragmatic support of Muslim authorities for his control of political power, though not without periodic tensions between them. The basis of his power was his defense of jihad, which he proclaimed in the name of the Caliph. His image as a champion of Islam served to justify his assumption of governmental authority.Having monopolized political dominance in the caliphate, he carried out profound reforms in both foreign and domestic politics. He made numerous victorious campaigns in both the Maghreb and the Iberian Peninsula. On the peninsula, his incursions against the Christian kingdoms temporarily halted their advance southward.