Mu'adh ibn Muslim ibn Mu'adh (Arabic: معاذ بن مسلم بن معاذ) was a general and governor for the Abbasid Caliphate.
He was a Persian from Khuttal or Rayy, who converted and became a mawla of the Banu Dhuhl tribe.
He participated in the Abbasid Revolution in 737/738, and was a partisan of Abu Muslim.
He was closely connected to the Abbasid family, and his family continued to enjoy high office: one of his sons, Husayn, was a foster-brother of Caliph al-Hadi, while another son, Yahya, served as governor of Syria and Armenia.
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