Abu Umar Ahmad ibn Muhammad ibn al-Asi ibn Ahmad ibn Sulayman ibn Isa ibn Darraj al-Qastalli was an Andalusi poet. He was an author of courtly poetry for the Córdoban military leader Almanzor and after 1018, for the rulers of the Taifa of Zaragoza. He is mentioned by the Muslim philosopher Al-Tha'alibi in his work Kitāb Yatīmat saying "He was for the country Andalus that which al-Mutanabbi was for Syria, a poet of the highest order, and equally elegant in what he said and wrote."