Mohsen Aminzadeh (Persian: محسن امینزاده, born 1957 in Mashhad, Iran) is an Iranian reformist politician and former diplomat. Aminzadeh was a founding member of the largest reformist party, the Islamic Iran Participation Front. He served as the Deputy Foreign Minister during the 1997-2005 administration of the Iranian president Mohammad Khatami.
Like many other senior reformist politicians, Aminzadeh was arrested in June 2009 for protesting the disputed re-election of president Ahmadinejad and convicted in 2010 of conspiring to "disturb security" and "spreading propaganda" against the Islamic regime.
Aminzadeh received a B.Sc. in Mining Engineering from Amirkabir University of Technology in 1982. He entered Shahid Beheshti University in late 1990 and studied for a Masters in Political Science. He also has PhD in Political Science from Tehran University.
In 1988, Aminzadeh was appointed the first head of a department dedicated to the press within the Ministry of Culture.
He served as Deputy Foreign Minister from 1997–2005 under the reformist administration of Mohammad Khatami.
BBC News and Amnesty International have described him as "a leading member" of the Islamic Iran Participation Front. According to the semiofficial ISNA news agency, Aminzadeh was head of the opposition coalition's headquarters in 2009. He was arrested in June 2009, amidst the 2009 Iranian election protests.