Encyclopedia of Islam

The Encyclopaedia of Islam (EI) is an encyclopaedia of the academic discipline of Islamic studies published by Brill. It is considered to be the standard reference work in the field of Islamic studies. The first edition was published in 1913–1938, the second in 1954–2005, and the third was begun in 2007.

According to Brill, the EI includes "articles on distinguished Muslims of every age and land, on tribes and dynasties, on the crafts and sciences, on political and religious institutions, on the geography, ethnography, flora and fauna of the various countries and on the history, topography and monuments of the major towns and cities. In its geographical and historical scope it encompasses the old Arabo-Islamic empire, the Islamic countries of Iran, Central Asia, the Indian sub-continent and Indonesia, the Ottoman Empire and all other Islamic countries".

EI is considered to be the standard reference work in the field of Islamic studies. Each article was written by a recognized specialist on the relevant topic. However, unsurprisingly for a work spanning 40 years until completion, not every one of them reflects recent research.

The most important, authoritative reference work in English on Islam and Islamic subjects. Includes long, signed articles, with bibliographies. Special emphasis is given in this (EI2) edition to economic and social topics, but it remains the standard encyclopedic reference on the Islamic religion in English.

The most important and comprehensive reference tool for Islamic studies is the Encyclopaedia of Islam, an immense effort to deal with every aspect of Islamic civilization, conceived in the widest sense, from its origins down to the present day... EI is no anonymous digest of received wisdom. Most of the articles are signed, and while some are hardly more than dictionary entries, others are true research pieces – in many cases the best available treatment of their subject.

This reference work is of fundamental importance on topics dealing with the geography, ethnography and biography of Muslim peoples.

The first edition (EI1) was modeled on the Pauly-Wissowa Encyclopaedia of the Ancient World. EI1 was created under the aegis of the International Union of Academies, and coordinated by Leiden University. It was published by Brill in four volumes plus supplement from 1913 to 1938 in English, German, and French editions.

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