Anarchism	Anarchism, Anti-capitalism, Anti-fascism, Economic ideologies, Left-wing politics, Libertarian socialism, Libertarianism, Political culture, Political movements, Political ideologies, Social theories, Socialism, Far-left politics
Autism	1910s neologisms
Albedo	Land surface effects on climate, Climate change feedbacks, Climate forcing, Climatology, Electromagnetic radiation, Radiometry, Scattering, absorption and radiative transfer (optics), Radiation, 1760s neologisms
A	ISO basic Latin letters, Vowel letters
Alabama	Alabama, 1819 establishments in the United States, Southern United States, States and territories established in 1819, States of the Confederate States of America, States of the Gulf Coast of the United States, States of the United States, U.S. states with multiple time zones, Contiguous United States
Achilles	Greek mythological heroes, Kings of the Myrmidons, Achaean Leaders, Thessalians in the Trojan War, Metamorphoses characters, Mythological rapists, Demigods in classical mythology, LGBT themes in Greek mythology, Achilles, Deeds of Apollo, Medea
Abraham Lincoln	Abraham Lincoln, 1809 births, 1865 deaths, 1865 murders in the United States, 19th-century American politicians, 19th-century presidents of the United States, American abolitionists, American colonization movement, American lawyers admitted to the practice of law by reading law, American military personnel of the Indian Wars, American militia officers, American nationalists, American people of English descent, American political party founders, Illinois postmasters, American surveyors, Assassinated heads of state, Assassinated presidents of the United States, Burials at Oak Ridge Cemetery, Candidates in the 1860 United States presidential election, Candidates in the 1864 United States presidential election, Hall of Fame for Great Americans inductees, Illinois Central Railroad people, Illinois Republicans, Illinois lawyers, Lincoln family, Male murder victims, Members of the Illinois House of Representatives, People associated with the assassination of Abraham Lincoln, People from Coles County, Illinois, People from LaRue County, Kentucky, People from Macon County, Illinois, People from Spencer County, Indiana, People murdered in Washington, D.C., People of Illinois in the American Civil War, People with mood disorders, Politicians from Springfield, Illinois, Presidents of the United States, Republican Party (United States) presidential nominees, Republican Party presidents of the United States, Union political leaders, Whig Party members of the United States House of Representatives from Illinois
Aristotle	Aristotle, Aristotelianism, 384 BC births, 322 BC deaths, 4th-century BC mathematicians, 4th-century BC philosophers, 4th-century BC writers, Academic philosophers, Acting theorists, Ancient Greek biologists, Ancient Greek economists, Ancient Greek epistemologists, Ancient Greek ethicists, Ancient Greek logicians, Ancient Greek mathematicians, Ancient Greek metaphilosophers, Ancient Greek metaphysicians, Ancient Greek philosophers, Ancient Greek philosophers of language, Ancient Greek philosophers of mind, Ancient Greek physicists, Ancient Greek political philosophers, Ancient Greek philosophers of art, Ancient literary critics, Ancient Stagirites, Aphorists, Aristotelian philosophers, Attic Greek writers, Ancient Greek cosmologists, Critical thinking, Cultural critics, Founders of philosophical traditions, Greek male writers, Greek geologists, Greek meteorologists, Greek social commentators, Humor researchers, Irony theorists, Metic philosophers in Classical Athens, Moral philosophers, Natural philosophers, Ontologists, Peripatetic philosophers, Philosophers and tutors of Alexander the Great, Philosophers of ancient Chalcidice, Philosophers of culture, Philosophers of education, Philosophers of ethics and morality, Philosophers of history, Philosophers of law, Philosophers of literature, Philosophers of logic, Philosophers of love, Philosophers of psychology, Philosophers of science, Philosophers of time, Philosophers of sexuality, Philosophers of technology, Philosophical logic, Philosophical theists, Philosophy academics, Philosophy writers, Rhetoric theorists, Social critics, Social philosophers, Students of Plato, Trope theorists, Virtue ethicists, Virtue ethics, Western culture, Western philosophy, Zoologists
An American in Paris	1928 compositions, Compositions by George Gershwin, Grammy Hall of Fame Award recipients, Music about Paris, Music commissioned by the New York Philharmonic, Symphonic poems
Academy Award for Best Production Design	Academy Awards, Best Art Direction Academy Award winners, Awards for best art direction
Academy Awards	Academy Awards, 1929 establishments in California, Performing arts trophies, American annual television specials, American film awards, Annual events in Los Angeles County, California, Awards established in 1929, Cinema of Southern California, Events in Los Angeles, Hollywood, Los Angeles history and culture, American live television shows
Actrius	1997 films, 1997 drama films, Catalan-language films, Films set in Barcelona, Films directed by Ventura Pons, Spanish drama films
Animalia (book)	Alphabet books, 1986 children's books, Picture books by Graeme Base, Puzzle books, Australian children's books, Puffin Books books
International Atomic Time	Time scales
Altruism	Altruism, Auguste Comte, Defence mechanisms, Morality, Moral psychology, Philanthropy, Social philosophy, Interpersonal relationships, Virtue
Ayn Rand	Ayn Rand, 1905 births, 1982 deaths, 20th-century American dramatists and playwrights, 20th-century American novelists, 20th-century American philosophers, 20th-century American screenwriters, 20th-century American women writers, 20th-century atheists, 20th-century essayists, 20th-century pseudonymous writers, 20th-century Russian philosophers, Activists from New York (state), American abortion-rights activists, American anti-communists, American anti-fascists, American atheist writers, American essayists, American ethicists, American people of Russian-Jewish descent, American political activists, American political philosophers, American science fiction writers, American secularists, American women activists, American women dramatists and playwrights, American women essayists, American women novelists, American women philosophers, American women screenwriters, American writers of Russian descent, Aristotelian philosophers, Atheist philosophers, Atheists of the Russian Empire, Burials at Kensico Cemetery, Critics of Christianity, Critics of Marxism, Dramatists and playwrights of the Russian Empire, Epistemologists, Exophonic writers, Female critics of feminism, Heart failure deaths in New York (state), Jewish American atheists, Jewish American dramatists and playwrights, Jewish American novelists, Jewish activists, Jewish anti-communists, Jewish anti-fascists, Jewish philosophers, Jewish women writers, Jews of the Russian Empire, Metaphysicians, Novelists from New York (state), Objectivists, People with acquired American citizenship, Philosophers from New York (state), Political philosophers, Pseudonymous women writers, Saint Petersburg State University alumni, Screenwriters from New York (state), Social critics, Soviet emigrants to the United States, Women science fiction and fantasy writers, Writers from New York City, Writers from Saint Petersburg
Alain Connes	1947 births, Living people, 20th-century French mathematicians, Foreign associates of the National Academy of Sciences, 21st-century French mathematicians, Collège de France faculty, Institute for Advanced Study visiting scholars, Fields Medalists, Mathematical analysts, Differential geometers, École Normale Supérieure alumni, Vanderbilt University faculty, Foreign Members of the Russian Academy of Sciences, Members of the French Academy of Sciences, Members of the Norwegian Academy of Science and Letters, Members of the Royal Danish Academy of Sciences and Letters, Clay Research Award recipients
Allan Dwan	1885 births, 1981 deaths, 20th-century American male writers, 20th-century American screenwriters, American film directors, American film producers, American male screenwriters, Burials at San Fernando Mission Cemetery, Canadian emigrants to the United States, Film directors from Toronto, Western (genre) film directors, Writers from Toronto
Algeria	Algeria, North African countries, Maghrebi countries, Saharan countries, Arab republics, Republics, Arabic-speaking countries and territories, Berber-speaking countries and territories, French-speaking countries and territories, G15 nations, Member states of OPEC, Member states of the African Union, Member states of the Arab League, Member states of the Organisation of Islamic Cooperation, Member states of the Union for the Mediterranean, Member states of the United Nations, States and territories established in 1962, 1962 establishments in Algeria, 1962 establishments in Africa, Countries in Africa
List of Atlas Shrugged characters	Atlas Shrugged characters, Fictional socialites, Lists of literary characters, Literary characters introduced in 1957
Anthropology	Anthropology, Behavioural sciences
Agricultural science	Agricultural science
Alchemy	Alchemy, Esotericism, Hermeticism, History of philosophy, History of science
Astronomer	Astronomy, Astronomers, Science occupations
ASCII	ASCII, Computer-related introductions in 1963, Character sets, Character encoding, Latin-script representations, Presentation layer protocols, American National Standards Institute standards
Animation	Animation, Cartooning, Articles containing video clips, Film and video technology
Apollo	Apollo, Greek gods, Roman gods, Beauty gods, Health gods, Knowledge gods, Light gods, Maintenance deities, Music and singing gods, Oracular gods, Solar gods, Plague gods, Dragonslayers, Mythological Greek archers, Mythological rapists, Homosexuality and bisexuality deities, Divine twins, Deities in the Iliad, Metamorphoses characters, Musicians in Greek mythology, Characters in Greek mythology, LGBT themes in Greek mythology, Children of Zeus, Characters in the Odyssey, Characters in the Argonautica, Characters in Roman mythology, Dance deities, Mythological Greek physicians, Childhood gods, Arts gods, Dii Consentes, Medicine deities, Mercurian deities, Twelve Olympians
Andre Agassi	Andre Agassi, 1970 births, Living people, 20th-century American businesspeople, 21st-century American businesspeople, American autobiographers, American investors, American male tennis players, American people of Iranian descent, American people of Iranian-Assyrian descent, American sportspeople of Armenian descent, American real estate businesspeople, American sportspeople in doping cases, Armenian-American tennis players, Assyrian sportspeople, Australian Open (tennis) champions, Doping cases in tennis, Ethnic Armenian sportspeople, French Open champions, Grand Slam (tennis) champions in men's singles, International Tennis Hall of Fame inductees, Iranian Assyrian people, Iranian people of Armenian descent, Medalists at the 1996 Summer Olympics, Nevada Democrats, Novak Djokovic coaches, Olympic gold medalists for the United States in tennis, Philanthropists from Nevada, Sportspeople from Las Vegas, Sportspeople of Iranian descent, Steffi Graf, Tennis people from Nevada, Tennis players at the 1996 Summer Olympics, US Open (tennis) champions, Wimbledon champions, Writers from Las Vegas, ATP number 1 ranked singles tennis players, ITF World Champions
Austroasiatic languages	Austroasiatic languages, Agglutinative languages, Language families, Sino-Austronesian languages
Afroasiatic languages	Afroasiatic languages, Afroasiatic peoples, Language families, Ethnic groups in Africa, Ethnic groups in Asia, Ethnic groups in Europe
Andorra	Andorra, 1278 establishments in Europe, Catalan Countries, Christian states, Countries in Europe, Diarchies, Duty-free zones of Europe, French-speaking countries and territories, Iberian Peninsula countries, Important Bird Areas of Andorra, Landlocked countries, Member states of the Council of Europe, Member states of the Organisation internationale de la Francophonie, Member states of the United Nations, Monarchies of Europe, Prince-bishoprics, Principalities, Pyrenees, Southern European countries, Southwestern European countries, Spanish-speaking countries and territories, Special economic zones, States and territories established in 1278
Arithmetic mean	Means
American Football Conference	National Football League, American Football League, Sports organizations established in 1970
Animal Farm	Animal Farm, 1945 British novels, Allegory, British novellas, British novels adapted into films, British novels adapted into plays, British novels adapted into television shows, British political novels, British satirical novels, Cats in literature, Cattle in literature, Censored books, Dogs in literature, Dystopian novels, English novels, Hugo Award for Best Novella winning works, Novels about animals, Novels about propaganda, Novels about revolutionaries, Novels about totalitarianism, Novels adapted into comics, Novels adapted into radio programs, Novels by George Orwell, Pigs in literature, Political literature, Roman à clef novels, Satirical novels, Secker & Warburg books
Amphibian	Amphibians, Amphibious organisms, Extant Late Devonian first appearances, Taxa named by John Edward Gray
Alaska	Alaska, Arctic Ocean, Former Russian colonies, States and territories established in 1959, States of the United States, States of the West Coast of the United States, U.S. states with multiple time zones, 1959 establishments in the United States, Western United States, Northern America, Enclaves and exclaves, Beringia, Exclaves in the United States
Agriculture	Agriculture, Agronomy, Food industry
Aldous Huxley	Aldous Huxley, 1894 births, 1963 deaths, 20th-century English novelists, 20th-century essayists, Alumni of Balliol College, Oxford, Anti-consumerists, Bates method, English emigrants to the United States, 20th-century British short story writers, Burials in Surrey, Consciousness researchers and theorists, Deaths from cancer in California, Deaths from laryngeal cancer, Duke University faculty, English agnostics, English essayists, English expatriates in the United States, English male novelists, English male poets, English male short story writers, English pacifists, English people of Cornish descent, English satirists, English science fiction writers, English short story writers, English travel writers, Futurologists, Human Potential Movement, Huxley family, James Tait Black Memorial Prize recipients, Male essayists, Moral philosophers, Mystics, Neo-Vedanta, People educated at Eton College, People from Godalming, Perennial philosophy, Philosophers of culture, Philosophers of ethics and morality, Philosophers of literature, Philosophers of mind, Philosophers of technology, British psychedelic drug advocates, Writers from Los Angeles, Writers from Taos, New Mexico, 20th-century English philosophers, Lost Generation writers
Algae	Algae, Endosymbiotic events, Polyphyletic groups
Analysis of variance	Analysis of variance, Design of experiments, Statistical tests, Parametric statistics
Alkane	Alkanes, Hydrocarbons
Appellate procedure in the United States	United States appellate procedure, Legal procedure, United States procedural law
Answer (law)	Common law, Legal documents
Appellate court	Courts by type, Appellate courts, Jurisdiction
Arraignment	Legal terminology, Prosecution, United States criminal procedure, Criminal law of the United Kingdom, Australian criminal law
America the Beautiful	1895 songs, American Christian hymns, American patriotic songs, Pikes Peak, History of Colorado Springs, Colorado, Songs based on poems, Grammy Hall of Fame Award recipients, Concert band pieces, Ray Charles songs, Whitney Houston songs
Assistive technology	Assistive technology, Educational technology, Web accessibility
Abacus	Abacus, Mathematical tools, Chinese mathematics, Egyptian mathematics, Greek mathematics, Indian mathematics, Japanese mathematics, Korean mathematics, Roman mathematics
Acid	Acids, Acid–base chemistry
Asphalt	Asphalt, Amorphous solids, Building materials, Chemical mixtures, IARC Group 2B carcinogens, Pavements, Petroleum products, Road construction materials
American National Standards Institute	American National Standards Institute, 1918 establishments in the United States, 501(c)(3) organizations, Charities based in Washington, D.C., ISO member bodies, Organizations established in 1918, Technical specifications
Apollo 11	Apollo 11, Buzz Aldrin, Neil Armstrong, Michael Collins (astronaut), Apollo program missions, 1969 on the Moon, Soft landings on the Moon, Spacecraft launched by Saturn rockets, Articles containing video clips, Crewed missions to the Moon
Apollo 8	Apollo 8, Apollo program missions, Crewed missions to the Moon, Spacecraft launched in 1968, 1968 in the United States, Spacecraft which reentered in 1968, December 1968 events, Spacecraft launched by Saturn rockets, Jim Lovell, William Anders, Frank Borman
Astronaut	Astronauts, Science occupations, 1959 introductions
A Modest Proposal	Essays by Jonathan Swift, Satirical essays, Pamphlets, 18th-century essays, Works published anonymously, British satire, 1729 in Great Britain, Cannibalism in fiction, 1729 books
Alkali metal	Chemical compounds by element, Alkali metals, Groups (periodic table), Periodic table, Articles containing video clips
Alphabet	Alphabets, Orthography
Atomic number	Chemical properties, Nuclear physics, Atoms, Dimensionless numbers of chemistry, Numbers
Anatomy	Anatomy, Anatomical terminology, Branches of biology, Morphology (biology)
Affirming the consequent	Propositional fallacies, Fallacies, Logic articles needing expert attention
Andrei Tarkovsky	Andrei Tarkovsky, 1932 births, 1986 deaths, 20th-century Russian diarists, 20th-century Russian male actors, 20th-century Russian male writers, 20th-century Russian non-fiction writers, 20th-century Russian screenwriters, Burials at Sainte-Geneviève-des-Bois Russian Cemetery, Cannes Film Festival Award for Best Director winners, Deaths from cancer in France, Deaths from lung cancer, Directors of Golden Lion winners, Film directors from Kostroma Oblast, Filmmakers who won the Best Foreign Language Film BAFTA Award, Gerasimov Institute of Cinematography alumni, High Courses for Scriptwriters and Film Directors faculty, Lenin Prize winners, Male actors from Ivanovo Oblast, Male actors from Kostroma Oblast, People from Kadyysky District, People's Artists of the RSFSR, Russian experimental filmmakers, Russian male film actors, Russian opera directors, Russian Orthodox Christians from Russia, Russian people of Polish descent, Russian people of Romanian descent, Science fiction film directors, Soviet diarists, Soviet documentary film directors, Soviet emigrants to France, Soviet emigrants to Italy, Soviet film directors, Soviet male film actors, Soviet non-fiction writers, Soviet screenwriters, Writers from Ivanovo Oblast, Writers from Kostroma Oblast
Ambiguity	Ambiguity, Semantics, Mathematical notation, Concepts in epistemology, Barriers to critical thinking, Formal semantics (natural language)
Abel	Cain and Abel, Bereshit (parashah), Biblical murder victims, Book of Genesis people, Children of Adam and Eve, Male murder victims, Shepherds, Uthras, Hebrew Bible people in Mandaeism
Aardvark	Orycteropus, Mammals of Africa, Myrmecophagous mammals, Mammals described in 1766, Extant Zanclean first appearances, Taxa named by Peter Simon Pallas
Aardwolf	Mammals described in 1783, Carnivorans of Africa, Hyenas, Mammals of Southern Africa, Fauna of East Africa, Myrmecophagous mammals, Taxa named by Anders Sparrman
Adobe	Soil-based building materials, Masonry, Adobe buildings and structures, Appropriate technology, Vernacular architecture, Sustainable building, Buildings and structures by construction material, Western (genre) staples and terminology
Adventure	Adventure
Asia	Asia, Continents
Aruba	Aruba, Island countries, 10th-century establishments in Aruba, 1499 establishments in the Spanish Empire, 1636 disestablishments in the Spanish Empire, 1636 establishments in the Dutch Empire, 1799 disestablishments in the Dutch Empire, 1799 establishments in the British Empire, 1802 disestablishments in the British Empire, 1802 establishments in the Dutch Empire, 1804 disestablishments in the Dutch Empire, 1804 establishments in the British Empire, 1816 disestablishments in the British Empire, 1816 establishments in the Dutch Empire, 1986 disestablishments in the Netherlands Antilles, 1986 establishments in Aruba, Caribbean countries of the Kingdom of the Netherlands, Dutch-speaking countries and territories, Former Dutch colonies, Former Spanish colonies, Former British colonies and protectorates in the Americas, Islands of the Netherlands Antilles, Populated places established in the 10th century, Small Island Developing States, Special territories of the European Union, States and territories established in 1986, Dependent territories in the Caribbean
Articles of Confederation	Signers of the Articles of Confederation, 1777 in the United States, 1781 in law, 1781 in the United States, Defunct constitutions, Documents of the American Revolution, Federalism in the United States, History of York County, Pennsylvania, Legal history of the United States, Ordinances of the Continental Congress, Pennsylvania in the American Revolution, Political charters, United States documents, York, Pennsylvania, 1777 in Pennsylvania
Atlantic Ocean	Atlantic Ocean, Oceans, History of the Atlantic Ocean, Landforms of the Atlantic Ocean, Articles containing video clips, Oceans surrounding Antarctica
Arthur Schopenhauer	Arthur Schopenhauer, 1788 births, 1860 deaths, 19th-century atheists, 19th-century essayists, 19th-century German male writers, 19th-century German non-fiction writers, 19th-century German philosophers, 19th-century German writers, 19th-century philosophers, Aesthetics, Animal rights scholars, Anti-natalists, Aphorists, Atheist philosophers, Burials at Frankfurt Main Cemetery, Continental philosophers, Critical theorists, Critics of Christianity, Critics of Judaism, Critics of religions, Cultural critics, Epistemologists, Flautists, German atheist writers, German Buddhists, German scholars of Buddhism, German ethicists, German eugenicists, German flautists, German logicians, German male essayists, German male non-fiction writers, German monarchists, German people of Dutch descent, German philologists, Humboldt University of Berlin faculty, Idealists, Kantian philosophers, Logicians, Metaphilosophers, Metaphysicians, Monism, Moral philosophers, Ontologists, Phenomenologists, Philosophers of art, Philosophers of culture, Philosophers of education, Philosophers of ethics and morality, Philosophers of history, Philosophers of language, Philosophers of literature, Philosophers of logic, Philosophers of love, Philosophers of mind, Philosophers of pessimism, Philosophers of psychology, Philosophers of religion, Philosophers of science, Philosophy writers, Political philosophers, Simple living advocates, German social commentators, Social critics, Social philosophers, Theorists on Western civilization, University of Göttingen alumni, Writers from Gdańsk
Angola	Angola, 1975 establishments in Angola, Central African countries, Countries in Africa, Former Portuguese colonies, Least developed countries, Member states of OPEC, Member states of the African Union, Member states of the Community of Portuguese Language Countries, Member states of the United Nations, Portuguese-speaking countries and territories, Republics, Southern African countries, States and territories established in 1975
Demographics of Angola	Demographics of Angola, Society of Angola
Politics of Angola	Politics of Angola
Economy of Angola	Economy of Angola, African Union member economies, Blood diamonds, OPEC, World Trade Organization member economies
Transport in Angola	Transport in Angola
Angolan Armed Forces	Military of Angola, Military history of Angola, Angolan Civil War, 1991 establishments in Angola, Military units and formations established in 1991
Foreign relations of Angola	Foreign relations of Angola
Albert Sidney Johnston	1803 births, 1862 deaths, Albert Sidney Johnston, Confederate States of America military personnel killed in the American Civil War, Deaths from bleeding, Burials at Texas State Cemetery, Confederate States Army full generals, People from Washington, Kentucky, People from Texas, People of California in the American Civil War, People of Texas in the American Civil War, American people of the Black Hawk War, Transylvania University alumni, United States Army generals, United States Military Academy alumni, People of the Texas Revolution, People of the Utah War, United States politicians killed during the Civil War, Preston family of Virginia
Android (robot)	Android (robot), Japanese inventions, South Korean inventions, Osaka University research, Science fiction themes, Human–machine interaction, Robots
Alberta	Alberta, 1905 establishments in Canada, Provinces and territories of Canada, States and territories established in 1905, Canadian Prairies
List of anthropologists	Lists of social scientists, Anthropologists
Actinopterygii	Ray-finned fish, Fish classes, Silurian bony fish, Extant Silurian first appearances
Albert Einstein	Albert Einstein, 1879 births, 1955 deaths, 20th-century American engineers, 20th-century American physicists, 20th-century American writers, American agnostics, American humanists, American letter writers, American Nobel laureates, American pacifists, American relativity theorists, American science writers, American Zionists, American Ashkenazi Jews, Charles University faculty, Swiss cosmologists, Deaths from abdominal aortic aneurysm, Einstein family, ETH Zurich alumni, ETH Zurich faculty, German agnostics, German Ashkenazi Jews, German emigrants to Switzerland, German humanists, 19th-century German Jews, German Nobel laureates, German relativity theorists, Institute for Advanced Study faculty, Jewish agnostics, Jewish American physicists, Jewish emigrants from Nazi Germany to the United States, Jewish physicists, Members of the Royal Netherlands Academy of Arts and Sciences, Members of the United States National Academy of Sciences, Naturalised citizens of Austria, Naturalised citizens of Switzerland, Naturalized citizens of the United States, New Jersey Hall of Fame inductees, Nobel laureates in Physics, Pantheists, Patent examiners, People who lost German citizenship, Philosophers of mathematics, Philosophers of science, Philosophy of science, Quantum physicists, Scientists from Munich, Spinozists, Stateless people, Denaturalized citizens of Germany, Swiss agnostics, Swiss emigrants to the United States, Swiss Ashkenazi Jews, 20th-century Swiss inventors, 20th-century American inventors, Swiss physicists, Winners of the Max Planck Medal, University of Zurich alumni, University of Bern faculty, University of Zurich faculty, Swiss Nobel laureates, Württemberger emigrants to the United States
Afghanistan	Afghanistan, 1709 establishments in Asia, Central Asian countries, Countries in Asia, Iranian countries and territories, Iranian Plateau, Landlocked countries, Least developed countries, Member states of the Organisation of Islamic Cooperation, Member states of the South Asian Association for Regional Cooperation, Member states of the United Nations, Pashto-speaking countries and territories, Persian-speaking countries and territories, South Asian countries, States and territories established in 1709, States and territories established in 1747, Islamic states, Emirates
Albania	Mines in Albania, Albanian diaspora, Albania, Albanian-speaking countries and territories, Southern European countries, Southeastern European countries, Balkan countries, Member states of NATO, Member states of the Council of Europe, Member states of the Organisation internationale de la Francophonie, Member states of the Organisation of Islamic Cooperation, Member states of the Union for the Mediterranean, Member states of the United Nations, Republics, States and territories established in 1912, Countries in Europe
Allah	Allah, Arabian deities, Arabian gods, Islamic terminology, Middle Eastern gods, Names of God
Algorithms (journal)	Computer science journals, Open access journals, MDPI academic journals, English-language journals, Publications established in 2008, Mathematics journals, Monthly journals
Azerbaijan	Azerbaijan, Caucasus, Countries in Asia, Countries in Europe, Eastern European countries, Western Asian countries, Landlocked countries, Member states of the Turkic Council, South Caucasus, Republics, Member states of the Commonwealth of Independent States, Member states of the Council of Europe, Member states of the Organisation of Islamic Cooperation, Member states of the United Nations, States and territories established in 1991, 1991 establishments in Asia, 1991 establishments in Europe, Azerbaijani-speaking countries and territories, Russian-speaking countries and territories, Transcontinental countries, Members of the International Organization of Turkic Culture
Amateur astronomy	Amateur astronomers, Amateur astronomy, Articles containing video clips, Citizen science
Aikido	Aikido, Japanese martial arts, Dō, Articles containing video clips
Art	Art, Aesthetics, Visual arts
Agnostida	Agnostida, Trilobite orders, Cambrian trilobites, Ordovician trilobites, Fossil taxa described in 1864, Cambrian first appearances, Late Ordovician extinctions, Taxa named by John William Salter
Abortion	Abortion, Human reproduction, Wikipedia medicine articles ready to translate, Wikipedia emergency medicine articles ready to translate
Abstract (law)	Legal research
American Revolutionary War	Native Americans in the American Revolution, American Revolutionary War, Conflicts in 1775, Conflicts in 1776, Conflicts in 1777, Conflicts in 1778, Conflicts in 1779, Conflicts in 1780, Conflicts in 1781, Conflicts in 1782, Conflicts in 1783, Global conflicts, Rebellions against the British Empire, Wars between the United Kingdom and the United States, Wars of independence
Ampere	SI base units, Units of electric current
Algorithm	Algorithms, Articles with example pseudocode, Mathematical logic, Theoretical computer science
Annual plant	Annual plants, Garden plants
Anthophyta	Historically recognized plant taxa
Mouthwash	Dentifrices, Oral hygiene, Drug delivery devices, Dosage forms
Alexander the Great	Alexander the Great, 356 BC births, 323 BC deaths, 4th-century BC Babylonian kings, 4th-century BC Macedonian monarchs, 4th-century BC Pharaohs, Ancient LGBT people, Ancient Macedonian generals, Ancient Pellaeans, Argead kings of Macedonia, City founders, Deified people, Hellenistic-era people, Monarchs of Persia, People in the deuterocanonical books, Pharaohs of the Argead dynasty, Shahnameh characters
Alfred Korzybski	1879 births, 1950 deaths, Writers from Warsaw, Clan Abdank, Polish emigrants to the United States, Polish engineers, 20th-century Polish philosophers, Polish mathematicians, Linguists from Poland, General semantics, People from Lakeville, Connecticut
Asteroids (video game)	1979 video games, Arcade video games, Atari 2600 games, Atari 7800 games, Atari 8-bit family games, Atari arcade games, Atari Lynx games, Cancelled Atari 5200 games, Cancelled Atari Jaguar games, Ed Logg games, Game Boy games, Game Boy Color games, Multidirectional shooters, Multiplayer and single-player video games, Science fiction video games, Sega arcade games, Taito arcade games, Xbox 360 games, Xbox 360 Live Arcade games, Vector arcade video games, Video games developed in the United States
Asparagales	Asparagales, Angiosperm orders, Extant Late Cretaceous first appearances
Alismatales	Alismatales, Angiosperm orders
Apiales	Apiales, Angiosperm orders, Taxa named by Takenoshin Nakai
Asterales	Asterales, Angiosperm orders
Asteroid	Asteroids, Minor planets
Allocution	Criminal procedure, Evidence law
Affidavit	Evidence law, Legal documents, Notary
Aries (constellation)	Aries (constellation), Constellations, Constellations listed by Ptolemy, Northern constellations
Aquarius (constellation)	Aquarius (constellation), Constellations, Equatorial constellations, Constellations listed by Ptolemy
Anime	Anime, 1917 introductions, Anime and manga terminology, Japanese inventions
Ankara	Ankara, Capitals in Asia, Populated places in Ankara Province
Arabic	Arabic language, Languages attested from the 9th century BC, Articles containing video clips, Central Semitic languages, Fusional languages, Languages of Algeria, Languages of Bahrain, Languages of Cameroon, Languages of Chad, Languages of the Comoros, Languages of Djibouti, Languages of Eritrea, Languages of Gibraltar, Languages of Israel, Languages of Iran, Languages of Iraq, Languages of Jordan, Languages of Kurdistan, Languages of Kuwait, Languages of Lebanon, Languages of Libya, Languages of Mali, Languages of Mauritania, Languages of Morocco, Languages of Niger, Languages of Oman, Languages of the State of Palestine, Languages of Qatar, Languages of Saudi Arabia, Languages of Senegal, Languages of South Sudan, Languages of Sicily, Languages of Somalia, Languages of Sudan, Languages of Syria, Languages of the United Arab Emirates, Languages of Tunisia, Languages of Yemen, Stress-timed languages, Subject–verb–object languages, Verb–subject–object languages
Alfred Hitchcock	Alfred Hitchcock, 1899 births, 1980 deaths, 20th-century English screenwriters, AFI Life Achievement Award recipients, Articles containing video clips, BAFTA fellows, British Army personnel of World War I, Cecil B. DeMille Award Golden Globe winners, Deaths from kidney failure, Directors Guild of America Award winners, Edgar Award winners, English emigrants to the United States, English expatriates in the United States, English film directors, English film producers, English male screenwriters, English people of Irish descent, English Roman Catholics, English television directors, Film directors from London, Film directors from Los Angeles, Film producers from California, Film producers from London, German-language film directors, Horror film directors, Knights Commander of the Order of the British Empire, People educated at St Ignatius' College, Enfield, People from Bel Air, Los Angeles, People from Leytonstone, People with acquired American citizenship, Recipients of the Irving G. Thalberg Memorial Award, Royal Engineers soldiers, Silent film directors, Silent film screenwriters, Horror film producers
Anaconda	Eunectes, Snake common names
Altaic languages	Altaic languages, Agglutinative languages, Central Asia, Proposed language families
Austrian German	Bavarian language, German dialects, Languages of Austria, National varieties of German
Axiom of choice	Axiom of choice
Attila	Attila the Hun, 5th-century Hunnic rulers, 5th-century monarchs in Europe, 406 births, 453 deaths, Deaths from choking, Genocide perpetrators
Aegean Sea	Aegean Sea, Seas of Greece, Seas of Turkey, Marginal seas of the Mediterranean, European seas, Seas of Asia, Landforms of Çanakkale Province, Landforms of Muğla Province, Landforms of İzmir Province, Landforms of Balıkesir Province, Landforms of Edirne Province, Landforms of Aydın Province
A Clockwork Orange (novel)	A Clockwork Orange, 1962 British novels, 1962 science fiction novels, Fiction about mind control, Books written in fictional dialects, British novellas, British novels adapted into films, British novels adapted into plays, British philosophical novels, British science fiction novels, Censored books, Dystopian novels, Fiction with unreliable narrators, Novels about music, Novels by Anthony Burgess, Obscenity controversies in literature, Novels about rape, Gang rape in fiction, Heinemann (publisher) books, English-language novels, Novels set in London, Metafictional novels, Novels about psychopathy, Science fiction novels adapted into films, Crime novels
Amsterdam	Amsterdam, Capitals in Europe, Cities in the Netherlands, Municipalities of North Holland, Olympic cycling venues, Populated places established in the 13th century, Populated places in North Holland, Port cities and towns in the Netherlands, Port cities and towns of the North Sea, Venues of the 1928 Summer Olympics, Populated lakeshore places in the Netherlands
Museum of Work	Museums in Östergötland County, Norrköping, Industry museums in Sweden, Cultural heritage of Sweden
Audi	Audi, Companies based in Baden-Württemberg, Car manufacturers of Germany, Companies based in Bavaria, Companies based in Ingolstadt, Companies formerly listed on the Frankfurt Stock Exchange, Vehicle manufacturing companies established in 1909, Vehicle manufacturing companies disestablished in 1939, Vehicle manufacturing companies established in 1965, Re-established companies, German brands, Luxury motor vehicle manufacturers, Companies based in Saxony, Sports car manufacturers, Volkswagen Group, Car brands, German companies established in 1909
Aircraft	Aircraft
Alfred Nobel	Alfred Nobel, 1833 births, 1896 deaths, Burials at Norra begravningsplatsen, Members of the Royal Swedish Academy of Sciences, Nobel family, Nobel Prize, Engineers from Stockholm, 19th-century Swedish businesspeople, 19th-century Swedish scientists, 19th-century Swedish engineers, Swedish chemists, Swedish philanthropists, Explosives engineers, Stroke-related deaths in Liguria
Alexander Graham Bell	Alexander Graham Bell, 1847 births, 1922 deaths, 19th-century Scottish scientists, Alumni of the University of Edinburgh, Alumni of University College London, American agnostics, American educational theorists, American eugenicists, American physicists, American Unitarians, Aviation pioneers, Canadian agnostics, Canadian Aviation Hall of Fame inductees, Canadian emigrants to the United States, Canadian eugenicists, 19th-century Canadian inventors, Canadian physicists, Canadian Unitarians, Deaths from diabetes, Fellows of the American Academy of Arts and Sciences, History of telecommunications, IEEE Edison Medal recipients, Language teachers, Members of the American Philosophical Society, Members of the American Antiquarian Society, Members of the United States National Academy of Sciences, National Aviation Hall of Fame inductees, National Geographic Society, Officiers of the Légion d'honneur, People educated at the Royal High School, Edinburgh, People from Baddeck, Nova Scotia, Businesspeople from Boston, People from Brantford, Scientists from Edinburgh, Scientists from Washington, D.C., Scottish agnostics, 19th-century Scottish businesspeople, Scottish emigrants to Canada, Scottish eugenicists, Scottish inventors, Scottish Unitarians, Smithsonian Institution people, Hall of Fame for Great Americans inductees, George Washington University trustees, Canadian activists, Gardiner family, Articles containing video clips, 19th-century British inventors, Scottish emigrants to the United States, John Fritz Medal recipients, 20th-century American scientists, 20th-century American inventors, Canadian educational theorists, Scottish physicists, 19th-century Canadian scientists, 20th-century Canadian scientists, Scottish Engineering Hall of Fame inductees