The office of Prime Minister of Iran was established in 1906 during the Persian Constitutional Revolution, and existed until 1989 when the office was abolished after a constitutional referendum. The prime minister was the head of government of Iran. Moshir al-Dowleh was the first and Mir-Hossein Mousavi was the last prime minister of Iran. Before the Constitutional Revolution, the head of government was called Grand Vizier (Sadr-e A'zam or Vazir-e A'zam). List Political party key See also Prime Minister of Iran List of grand viziers of Persia President of Iran List of presidents of Iran List of vice presidents of Iran List of speakers of the Parliament of Iran References Sources However, the birth year indicated there (1858) does not agree with his WorldCat entry and with his VIAF entry, both of which give 1857. Iran, List of prime ministers of Prime ministers