The cabinet led by Prime Minister Hassan Ali Mansur was inaugurated on 7 March 1964. It replaced the second government of Asadollah Alam. Mansur's cabinet was the first of party-governments in Iran. It was led by the Iran Novin Party and was approved by the Majlis on 8 March. It enjoyed nearly full confirmation at the Majlis, including the members of the opposition party, People's Party.

Hasan Ali Mansur was an Iranian politician who served as Prime Minister from 1964 to 1965. He served during the White Revolution of the Shah Mohammad Reza Pahlavi and was assassinated by a member of the Fada'iyan-e Islam.