Darioush Bayandor is a former Iranian diplomat and official who worked for the government of Shah Mohammad Reza Pahlavi. Following the Iranian Revolution, he left Iran to work for the United Nations in the 1980s and 1990s before retiring to Switzerland where he writes and consults.
Born in Iran, Bayandor served as a senior diplomat of the Iranian government in New York City and Tehran in the 1960s and 1970s. He was the director of the regional bureau for the Americas in the Iran foreign ministry and served as foreign-affairs adviser to two prime ministers of Imperial State of Iran. From 1965 through 1976 he served on Iran's permanent mission to the United Nations (UN). In 1980, Bayandor joined the UN and led several offices in Asia, Europe and Africa . He was the regional Representative for Central Africa based in Democratic Republic of Congo and the UN humanitarian coordinator during the wartime in late 1990's. Prior to that he had led UNHCR offices in Malaysia, in Bangladesh and France.
In 2006, Bayandor wrote "Hafez: A Face-Off With Virtue" about the famous 14th century Iranian lyric poet, Hafez. His book Iran and The CIA: The Fall of Mosaddeq Revisited, was published in 2010. The book has received mixed reviews, with the Economist and Washington Times describing it as "revisionist". Homa Katouzian, a historian and political scientist, dismissed the book as "political". A few other academics like Faud Ajami, Yann Richard and Shahram Chubin have praised the book as a valuable contribution to the literature  Washington Times criticized the book stating that "a careful reading of Mr. Bayandor's book, along with the CIA history and Mr. Roosevelt's memoir, shows that there is a very thin element of truth in his revisionist theory". However, The Economist and World Affairs were more complimentary, the former noting that "Bayandor's scepticism is a useful antidote to Roosevelt's self-aggrandising, which some later writers have mimicked uncritically".
- "Iran in the 20th century. Fall guy, How a prime minister was brought down". The Economist. 13 May 2010.
- Delegations to the General Assembly. 30. United Nations. 1975. p. 140.
- Permanent missions to the United Nations. 238–239. United Nations. 1976. pp. 86–87.
- "AUSTCARE Report on Burma Refugees". Burma.net. June 1992. Retrieved 28 November 2010.
- "Decisions Adopted by the Executive Board at its 149th session" (PDF). UNESCO. 28 May 1996. Retrieved 28 November 2010.
- "Decisions Adopted by the Executive Board at its 145th session" (PDF). UNESCO. 29 November 1994. Retrieved 28 November 2010.
- "Decisions Adopted by the Executive Board at its 142nd session" (PDF). UNESCO. 10 December 1993. Retrieved 28 November 2010.
- Bayandor, Darioush (Fall 2006). "Hafez: A Face-Off With Virtue". Journal of Middle Eastern and North African Intellectual and Cultural Studies. Binghamton, New York: Binghamton University. 4 (2).
- Spook Story: What Really Happened to Mossadeq? Roya Hakakian, World Affairs, July August 2010
- Book Review: How the shah came to power, By Joseph C. Goulden - The Washington Times, August 16, 2010
- http://www.radiofarda.com/content/f4_Homayoun_Katouzian_coup_28_mordad/2131844.html; for praise by professor Ajami see the blurb on the Persian translation of the book by Bijan Dolatabadi ISBN 978-1-59584-361-6 , ( Ketab Corp-Los Angeles-2014). For opinion by prof. Yann Richard see, Regard français sur le coup d'état de 1921 en Perse,(Brill-2014) ISBN 978-90-04-28367-1, page 3; for professor Chubin see,Iran and the CIA,(back cover page)ISBN 978-0-230-57927-9.