Fereydun Adamiyat or Fereidoon Adamiyat was a leading social historian of contemporary Iran and particularly the Qajar era. He was the son of Abbasquli Adamiyat, a pioneer of the Iranian Constitutional Revolution. Fereydun Adamiyat received his B.A. from the University of Tehran and his Ph.D. in diplomatic history from the London School of Economics. He is known for his original works on various aspects of the social and political history of Persia, most of them dealing with the ideological foundations of the Iranian Constitutional Revolution. Believing firmly in history's "Rational Movement" , Adamiyat saw no conflict between normative judgement and claims to objectivity.
Although predominantly published in Persian, he is often cited by Western scholars. His most famous book was Amir Kabir and Iran.
Adamiyat was also a diplomat, serving as Iran's ambassador to the Netherlands and India. He also worked for the United Nations in various capacities.