ÿêsàibn Aḥmad al-RÃÂzë (died 980) was a Muslim historian who wrote a continuation of the chronicle AkhbÃÂr mulà «k al-Andalus, the first narrative history of Islamic rule in Spain, which was written by his father, Aḥmad ibn Muḥammad ibn Mà «sa al-RÃÂzë.
The Arabic version of the AkhbÃÂr mulà «k al-Andalus along with ÿêsÃÂ's contribution to it is now lost. All that survives of ÿêsÃÂ's part are quotations in other Arabic histories. It appears that he began with the accession of ÿAbd al-RaḥmÃÂn III as emir in 912. His sections are richer in detail than his father's and reflect the cultural interests of the court of ÿAbd al-RaḥmÃÂn and his successor, al-Ḥakam II. The work may have been dedicated to the latter, who died in 976. There is evidence of the use of Christian sources, as in the use of the Spanish era in addition to the Islamic era. ÿêsàmay have had access to the history of the Franks by Bishop Gotmar that ÿAbd al-RaḥmÃÂn had commissioned. Ibn ḤayyÃÂn quotes ÿêsÃÂ's history of al-Ḥakam's reign from 971 to 975 in his Muqtabis. Of Aḥmad and ÿêsÃÂ, Ibn ḤayyÃÂn writes, "Together they endowed the Andalusis with a science [historiography] they had not hitherto practised with success."