Mansour Zalzal (Arabic,منصور زلزل),late 700s - early 800s was an Arab Musician and composer of Al-Kufa during the Abbasid era. Contributed musical scales that were later named after him (the Mansouri scale, Arabic,المقياس المنصوري) and introduced positions (intervals) within scales such as the wasati-zalzal.
Mansour Made improvements on the design of the lute instrument. Mansour was the Teacher of great musician Is'haq al-Mawsili.