Catalan

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

Chinese

• Encyclopedia of China
• Complete Classics Collection of Ancient China – Chinese language encyclopedia completed in 1725 (10 million Chinese characters)
• Yongle Encyclopedia – once contained 11,095 volumes and around 370 million Chinese characters but now contains less than 400 volumes

Czech

• Riegrův slovník naučný – first Czech encyclopedia published in 1860–1874 with 11 volumes, supplement vol. in 1890, online)
• Otto's encyclopedia – largest Czech-language encyclopedia published between 1888 and 1908 (28 vols) and 1930–1943 (12 vols, incomplete). Volumes 1–28 online
• Příruční slovník naučný – first post-war encyclopedia. With strong communist ideology. Four volumes, 1962–1967.
• Malá československá encklopedie – Small Czechoslovak encyclopedia, it was supposed to be forerunner to Great Czechoslovak encyclopedia that was never published, 6 volumes, 1984–1987.
• Diderot (8 volumes, 1999–2000)
• Universum (10 volumes, 1999–2001)
• Czech Wikipedia (2002–)

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 – one-volume encyclopedia from Columbia University Press last published in 2000
• The Complete Compendium of Universal Knowledge (1891)
• 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 – 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 – 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 – 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
• New American Cyclopedia – 16 volumes published between 1857 and 1866
• Nupedia – peer reviewed, open content online encyclopedia project, currently inactive
• Open Site – effort inspired by, but not officially affiliated with, the Open Directory Project
• Oracle Encyclopædia – five-volume encyclopedia published in 1895
• An Outline of Modern Knowledge – published in 1931 by Victor Gollancz
• Pears Cyclopaedia – one-volume encyclopaedia published annually in the United Kingdom
• Probert Encyclopaedia – 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

French

• Découvertes Gallimard – illustrated encyclopaedia in pocket format, 588 volumes plus 150⁺ volumes of spin-offs, published 1986–present
• Encyclopédie, ou dictionnaire raisonné des sciences, des arts et des métiers – contributed by the Encyclopédistes, edited by Denis Diderot and Jean le Rond d'Alembert, published 1751–1772

German

• Allgemeine Encyclopädie der Wissenschaften und Künste – very large 19th-century encyclopaedia by Ersch and Gruber
• Brockhaus Enzyklopädie – best-known encyclopedia in German, online-only since 2014
• 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 Book of Healing – 30-volume Persian-language encyclopedia published by Avicenna (Persian: ابن سینا) in 1027 (Arabic: کتاب الشفاء Kitāb al-Šifāʾ, Latin: Sufficientia)
• The Persian Encyclopedia (Persian: دایرةالمعارف فارسی) – 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

Portuguese

• Infopédia [pt] – since 2003
• Barsa – since 1964
• Diciopédia [pt] – 1997–2009
• Enciclopédia Verbo Luso-Brasileira de Cultura – Edição Século XXI [pt] (Verbo Luso-Brazilian Encyclopædia of Culture – 21st-Century Edition) – 1998–2009
• Grande Enciclopédia Portuguesa e Brasileira (Grand Portuguese and Brazilian Encyclopædia) – 1936–1999
• Grande Enciclopédia Larousse Cultural [pt] (Grand Cultural Encyclopædia Larousse) – 1998
• Enciclopédia Luso-Brasileira de Cultura [pt] (Luso-Brazilian Encyclopædia of Culture) – 1963–1995
• Lello Universal – Dicionário Enciclopédico Luso-Brasileiro (Lello Universal – Luso-Brazilian Encyclopædic Dictionary)
• Conhecer (To Know) – 1966–1981, adapted from Knowledge
• Enciclopédia Mirador Internacional [pt] (International Mirador Encyclopædia) – 1976
• Enciclopédia Infantil Verbo [pt] ( Verbo Children's Encyclopædia) – 1976
• Grande Enciclopédia Delta Larousse (Delta Larousse Grand Emcyclopædia) – 1970, adapted from the Grand Larousse encyclopédique
• Focus – Enciclopédia Internacional (Focus – International Encyclopædia) – 1964
• Enciclopédia Delta Larousse (Delta Larousse Encyclopædia) – 1960, adapted from the Encyclopédie Larousse méthodique
• Trópico – Enciclopédia Ilustrada em Cores [pt] (Trópico – Colour Illustrated Encyclopædia) – 1957
• Enciclopédia Brasileira Globo [pt] (Globo Brazilian Encyclopædia) – 1943
• Tesouro da Juventude (Youth's Thesaurus) – 1920, adapted from The Children's Encyclopædia

Russian

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

Slovak

• Slovenský náučný slovník. 3 volumes 1932. First general encyclopedia in Slovak language.
• Pyramída. Published between 1971 and 1990 in journal form (224 issues).
• Malá slovenská encyklopédia. 1 volume 1993
• Encyclopaedia Beliana. 20 planned volumes, 1999–, 9 volumes published as of 2021
• Všeobecný encyklopedický slovník. 2002, four volumes
• Slovak Wikipedia. 2003–
• Univerzum – všeobecná obrazová encyklopédia A – Ž. 1 volume, 2011

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 – largest 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

Ukrainian

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

Multiple languages

• Microsoft Encarta – computer-based encyclopedia published by Microsoft, now discontinued
• Wikipedia – world's largest free encyclopedia; a project to create a comprehensive encyclopedia using wiki software

National, regional, ethnic or cultural

Field