List of encyclopedias by branch of knowledge

Arabic

• The Book of Healing – a 30-volume Arabic-language encyclopedia published by Avicenna in 1027 q zz לימד אותי נוהל קרב שינוי נשימה

Catalan

• Gran Enciclopèdia Catalana – Catalan-language encyclopedia, started in fascicles, and published in 1968 by Edicions 62

Chinese

• Encyclopedia of China
• Gujin tushu jicheng – Chinese language encyclopedia completed in 1725 (10 million Chinese characters)

Czech

• Otto's encyclopedia – the largest Czech-language encyclopedia published between 1888–1908 and 1930–43

Danish

• Den Store Danske Encyklopædi

Dutch

• Winkler Prins, published in print between 1870 and 1993 and made available digitally to the present day
• Oosthoek, published between 1907 and 1981
• Christelijke Encyclopedie, published between 1926 and 2005
• Eerste Nederlandse Systematisch Ingerichte Encyclopaedie, published between 1946 and 1952
• Standaard Encyclopedie, published between 1969 and 1974 by Standaard Uitgeverij Antwerpen
• Grote Nederlandse Larousse Encyclopedie, published between 1971 and 1979
• Grote Spectrum Encyclopedie, published between 1974 and 1980

English

• Academic American Encyclopedia – 21-volume work published in 1980, also issued by Grolier under the names Barnes & Noble New American Encyclopedia, Global International Encyclopedia, Grolier Academic Encyclopedia, Grolier International Encyclopedia, Lexicon Universal Encyclopedia, and Macmillan Family Encyclopedia
• Chambers's Encyclopaedia – published in 1859 by W. Chambers and R. Chambers
• The Children's Encyclopedia – by Arthur Mee, published 1908–64 in the UK and in the US starting in 1910 as Grolier's The Book of Knowledge
• Children's Illustrated Encyclopedia – published by Dorling Kindersley
• Collier's Encyclopedia
• Columbia Encyclopedia – a one-volume encyclopedia from Columbia University Press last published in 2000
• Compton's Encyclopedia – 26-volume encyclopedia
• Compton's Interactive Encyclopedia
• Cyclopædia, or an Universal Dictionary of Arts and Sciences – 1728 publication by Ephraim Chambers
• Dobson's Encyclopædia – first encyclopedia printed in the United States, but mostly a reprint of the Encyclopædia Britannica Third Edition
• Edinburgh Encyclopædia – 18 volumes printed and published by William Blackwood and edited by David Brewster between 1808 and 1830
• Encyclopædia Britannica – one of the best-known encyclopedias in English, online only since 2010
• Encyclopædia Britannica Ultimate Reference Suite – DVD version of Encyclopædia Britannica
• Encyclopædia Metropolitana – 39 volumes in 59 parts published between 1817 and 1845
• Encyclopedia Americana – both a print work and currently a part of Grolier Multimedia Encyclopedia
• English Cyclopaedia – 23 volumes, published 1854–1862
• English Encyclopaedia – 10 volumes, published in 1802
• Everybody's Enquire Within – an illustrated book of miscellaneous knowledge issued in weekly instalments from 1937 to 1938
• Everyman's Encyclopaedia – published by Joseph Dent from 1913 as part of the Everyman's Library
• Everything2 – a collaborative Web-based database of interlinked user-submitted articles
• Funk & Wagnalls Standard Encyclopedia – first published in 1912; changed its name to Funk & Wagnalls New Standard Encyclopedia in 1931
• Grolier Multimedia Encyclopedia – an electronic encyclopedia published by Grolier
• Groliers Encyclopedia
• Harmsworth's Universal Encyclopaedia – edited by John Alexander Hammerton and published 1921–22
• Hutchinson Encyclopedia – single-volume work first published in 1948
• Microsoft Encarta – discontinued computer-based encyclopedia published by Microsoft, now discontinued
• New American Cyclopedia – 16 volumes published between 1857 and 1866
• Nupedia – a peer reviewed, open content online encyclopedia project, currently inactive
• Open Site – an effort inspired by, but not officially affiliated with, the Open Directory Project
• Oracle Encyclopædia – a five-volume encyclopedia published in 1895
• An Outline of Modern Knowledge – published in 1931 by Victor Gollancz
• Pears Cyclopaedia – a one-volume encyclopaedia published annually in the United Kingdom
• Probert Encyclopaedia – an online topical encyclopedia consisting of almost 100,000 short entries, published by Mathew Probert and based in the United Kingdom
• World Book Encyclopedia – designed for family use; the world's best selling print encyclopedia

German

• Allgemeine Encyclopädie der Wissenschaften und Künste – very large 19th-century encyclopaedia by Ersch and Gruber
• Brockhaus Enzyklopädie
• Grosses vollständiges Universal-Lexicon – huge 18th-century encyclopedia by Johann Heinrich Zedler
• Meyers Konversations-Lexikon

Italian

• Treccani – also known as Enciclopedia Italiana di Scienze, Lettere ed Arti

Latin

• Lexicon Universale – published in 1698

Persian

• The Persian Encyclopedia – a three-volume encyclopedia edited by Gholamhossein Mosahab, partially based on the early editions of the Columbia Encyclopedia

Polish

• Nowe Ateny – published in 1745–1746
• Universal Encyclopedia - 1859, 28 volumes, Orgelbrand
• Wielka Encyklopedia Powszechna PWN – 1962–1970, 13 volumes, PWN
• Wielka Encyklopedia PWN – 2001–2005, 31 volumes, PWN

Russian

• Brockhaus and Efron – imperial encyclopedia in 86 volumes
• Great Soviet Encyclopedia (Большая Советская Энциклопедия) – the second largest and most comprehensive encyclopedia in Russian; there were three editions; the third edition of 1969–78 contains 30 volumes
• Great Russian Encyclopedia - a universal Russian encyclopedia, completed in 36 volumes (2004-2017)

Slovenian

• Enciklopedija Slovenije

Spanish

• Enciclopedia Libre Universal (also known as Enciclopedia Libre) – project to create a Spanish encyclopedia using wiki software, released under the GFDL
• Enciclopedia universal ilustrada europeo-americana – the biggest encyclopedia of its time; also known as Enciclopedia Espasa o Enciclopedia Espasa-Calpe

Swedish

• Nationalencyklopedin – encyclopedia in Swedish
• Susning.nu – project to create a Swedish-language encyclopedia using wiki software; an anyone-can-edit encyclopedia until 2004; shut down in 2009

Turkish

• Anabritannica – published in Turkey and based on the Britannica Micropædia
• Ekşi Sözlük – a collaborative hypertext Turkish dictionary and encyclopedia site that has a similar concept with Everything2 or H2G2

Ukrainian

• Ukrainian Soviet Encyclopedia (Українська радянська енциклопедія) – an encyclopedia in Ukrainian; its first edition was 17 volumes

Multiple languages

• Wikipedia – the world's largest free encyclopedia; a project to create a comprehensive encyclopedia using wiki software

National, regional, ethnic or cultural

Field