Abu Mansur Buya (Persian: ابو منصور بویه; died 983), better known by his honorific title of Mu'ayyad al-Dawla (Arabic: مویدالدوله, lit.

In 955, a Daylamite military officer named Muhammad ibn Makan, attacked Isfahan.

After Isfahan was in safe Buyid hands once again, Abu Mansur Buya, along with his family and followers, then returned to the city.

958, Abu Mansur Buya went to Baghdad, and married Mu'izz al-Dawla's daughter Zubayda.

His vizier, Sahib ibn 'Abbad, summoned a gathering of the army and convinced its leaders to proclaim Fakhr al-Dawla as his successor.