Titles in Iraq

thumb|345x345px|An illustrated Portrait of Mohammad Shah Qajar|Muhammad Shah Qajar and his Vizier Haj Mirza Aghasi in Iran during the 19th century. Vizier's roles as advisors in courts evolved over time, becoming an important part of official government institutions.

' () or (; ), in Arabic rendered as () or ' (), was a title used in much of the Islamic world during the 10th–15th centuries, to denote the senior-most military commanders, but also as a generic general officer rank.