A portrait of Muhammad Shah Qajar's Vizier Haji Mirza Abbas Iravani, better known by his title...

Haji Mirza Abbas Iravani, was an Iranian politician, who served as the grand vizier of Mohammad Shah Qajar (r. 1834–1848) from 1835 to 1848.

Abbas was born in 1783 in Iravan (Yerevan), a city located in the Iravan Khanate, a khanate (i.e. province) located in the northwestern part of Qajar Iran. He was a son of Moslem ibn Abbas, a wealthy landowner, and a member of the Bayat clan. During his youth, Abbas spent his time with his father in the holy Shi'ite sites in Ottoman Iraq, where he was tutored by the Ne'matallahi Sufi teacher Molla 'Abd-al-Samad.  Aqasi entered into the service of Abbas Mirza, who by 1824 had appointed him as the tutor of several of his sons,Aqasi however he refrained from using the traditional vizier title of Sadr-e azam, instead referring himself by the title of Shakhs-e awwal (meaning "the first person" or "premier").

Aqasi initiated Mohammad Shah into Sufi mysticism, and the two men "came to be known as two 'dervishes'." While he has often been criticized for contributing to the disasters of the reign, it is possible that he was attempting to use Sufism as a weapon against the growing hold of the official representatives of religion, the mullahs, who were opposing both modernization and foreign influence. In foreign affairs, he managed to "prevent Iran disintegrating either into autonomous principalities or appanages of Russia, and Britain," and internally he "revived the cultivation of the mulberry tree in the Kerman region, to feed silkworms; and he envisaged the diversion of the waters of the River Karaj for Tehran's water-supply.