Firuz Kazemzadeh was born in Moscow, where his father (with Iranian-Azerbaijani origins) served in the embassy of Iran. After completing his primary and secondary education in Moscow, he moved to the United States in 1944 and entered Stanford University, graduating with distinction (Phi Beta Kappa) in 1946 and obtaining an MA in 1947. In 1950 Kazemzadeh received a Ph.D. in Russian history from Harvard University.
Kazemzadeh taught at Harvard in 1954-1956, then moved to Yale where he was professor of history until his retirement as professor emeritus in 1992. While at Yale, he also served as Master of Davenport College.
He is the author and co-author of a number of books on the history of Russia and Iran, as well as numerous articles and reviews for authoritative scholarly publications.
Between May 15, 1998 and May 14, 2003, Kazemzadeh served as a Commissioner on the United States Commission on International Religious Freedom, first appointed to this position in 1998 by President Bill Clinton, and in 2001, reappointed by US Senate Majority Leader Thomas Daschle.
- Kazemzadeh, Firuz (1947). The struggle for Russian Azerbaijan, 1918-1920. Stanford University.
- Kazemzadeh, Firuz (October 1956). "The Origin and Early Development of the Persian Cossack Brigade". American Slavic and East European Review. 15 (3): 351–363. doi:10.2307/3001099.
- Kazemzadeh, Firuz (1968). Russia and Britain in Persia, 1864-1914: A Study in Imperialism. Yale Russian and East European studies. Volume 6. Yale University Press.
- Kazemzadeh, Firuz (1974). "Russian penetration of the Caucasus". In Hunczak, Taras. Russian Imperialism from Ivan the Great to the revolution. Rutgers University Press. ISBN 978-0-8135-0737-8.
- Kazemzadeh, Firuz (1977). "The Baha'i Faith: A Summary Reprinted from the Encyclopædia Britannica". Reprinted from the Encyclopædia Britannica. National Spiritual Assembly of the Bahá’ís of the United States. ISBN 978-0-87743-121-3.
- Kazemzadeh, Firuz; International Communication Agency, Kennan Institute for Advanced Russian Studies (1979). "Russian penetration of the Caucasus". The Caucasus Region and Relations with the Central Government. Occasional papers. 60. Wilson Center, Kennan Institute for Advanced Russian Studies.
- Kazemzadeh, Firuz (1981). The struggle for Transcaucasia, 1917-1921. Hyperion Press. ISBN 978-0-8305-0076-5.(reprint of 1951 Philosophical Library edition)
- Kazemzadeh, Firuz (1991). "Iranian relations with Russia and the Soviet Union, to 1921". In Avery, P.; Hambly, G. R. G.; Melville, C. From Nadir Shah to the Islamic Republic. The Cambridge History of Iran. 7 illustrated (reprint, reissue ed.). Cambridge University Press. pp. 314–349. ISBN 978-0-521-20095-0.
- Kazemzadeh, Firuz (1994). – via %5b%5bQuestia%5d%5d (subscription required) %5b%5bCategory:Subscription required using via%5d%5d%5b%5bCategory:Pages containing links to subscription-only content%5d%5d "Central Asia's Foreign Relation: A Historical Survey" Check
|chapterurl=value (help). In Starr, S. Frederick. The Legacy of History in Russia and the New States of Eurasia. M. E. Sharpe. ISBN 9780521200950.
- Kazemzadeh, Firuz (2009). "'Abdu'l-Bahá 'Abbás (1844–1921)". Bahá’í Encyclopedia Project. Evanston, IL: National Spiritual Assembly of the Bahá’ís of the United States.
- Firuz Kazemzadeh (March 22, 2016). Interview with Dr. Firuz Kazemzadeh Baha'i Heritage Project (Youtube). Los Angeles, California: Los Angeles Baha'i Center.