Mohsen Mirdamadi (, born 1955 in Najafabad, Isfahan) is an Iranian academic and politician. He is the Deputy Secretary General of "Ettehad-e Mellat", the largest pro-reform political party in Iran. After the 2009 Iranian Presidential Elections, he was sentenced to and put to 6 years of prison, among other leaders of reformist party. Previously, he was elected as a member of the Parliament of Iran (the 6th Majlis) from 2000 until 2004, during which time he chaired the parliament's Commission of National Security and Foreign Policy. He received his PhD from Cambridge University in 1997 in Foreign Relations. He has served in various political roles since the 1979 Iranian Revolution, including serving as the governor of Khuzestan Province in the last years of the Iran-Iraq war. He was among the organizers of the 1979 Iran hostage crisis.