title: Geo Widengren
text: # Geo Widengren
  
  Geo Widengren (24 April 1907 – 28 January 1996) was a Swedish historian of religions, professor of history of religions at Uppsala University, orientalist and Iranist.
  
  Widengren wrote a series of works on Iranian religions (in particular Manicheism and Zoroastrism), Islam, Judaism, Gnosticism, etc. His most popular works include Die Religion Irans, published in 1965 (Les Religions de l'Iran, 1968).
  
  Widengren has been considered "one of the most famous historians of religions of the twentieth century".
  
  ## Academic career
  
  Geo Widengren was born and grew up in Stockholm. He did military service in the years 1925-27 and was appointed as a fähnrich at the Military Academy Karlberg. He participated as a volunteer in the Swedish Volunteer Corps in the Winter war.
  
  Widengren studied history of religions at Stockholm University for his mentor Tor Andrae until 1933 and received his doctorate at the Faculty of Theology in Uppsala in 1936. His doctoral thesis was entitled "The Accadian and Hebrew Psalms of Lamentation as Religious Documents". In 1940 he became a professor of History of religions at the same faculty when he was only 33 years old.
  
  Widengren was known for having mastered many languages, which gave him an advantage in the study of the frontiers of Asia during various eras. He had studied Assyriology in Copenhagen and Iranian Studies in Uppsala for H.S. Nyberg. He mastered, among other things, Greek, Latin, Armenian, Persian, Arabic, as well as several older Iranian languages such as Avestan and Middle Persian.
  
  Widengren was Vice President (1950–1960) and President (until 1970) for the International Association of the History of Religion. His pupil Anders Hultgård has published In memoriam Geo Widengren (1907–1996).
  
  Widengren emphasized the Iranian influences on Judaism, Christianity and Mithraism. Religious scholars in the 1960s critiqued these themes, but he continued to defend the importance of Iranian influence throughout his career. Widengren's position was continued and developed in many works by Alessandro Bausani and Shaul Shaked.
  
  