Search by letter: A
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Search by letter: A
- Asian Americans
- Asian black bear (Ursus thibetanus) Asian black bear
- Asian Development Bank: Mission, Structure, History, and Activities Asian Development Bank
- Asian elephant (Elephas maximus) Asian elephant
- Asian Football Confederation (AFC) Asian Football Confederation
- Asian Games
- Asian garden dormouse (Eliomys melanurus) Asian garden dormouse
- Asian Kung-Fu Generation
- Asian Para Games
- Asian tiger mosquito (Aedes albopictus) — overview, biology, public health Asian tiger mosquito
- Asian Volleyball Championship
- Asian Winter Games
- Asiana Airlines — South Korea's major international carrier Asiana Airlines
- Asiana Airlines Flight 214: 2013 San Francisco runway crash Asiana Airlines Flight 214
- Asiana Airlines Flight 733 (1993 Mokpo crash) Asiana Airlines Flight 733
- Asiatic cheetah (Acinonyx jubatus venaticus) Asiatic cheetah
- Asiatic linsang (Prionodon): small arboreal carnivores of Southeast Asia Asiatic linsang
- Asiatic lion (Panthera leo persica) Asiatic lion
- Asiatic salamanders (Hynobiidae): overview, biology and conservation Asiatic salamander
- Asiatic wildcat (Felis silvestris ornata) Asiatic wildcat
- Asier del Horno
- Asif Ali Zardari — Pakistani politician and former President Asif Ali Zardari
- Muhammad Asif Mohseni - Afghan Twelver Shia Grand Ayatollah and Political Leader Asif Mohseni
- Asikkala — municipality in Päijänne Tavastia, Finland Asikkala
- Asim Basu — Odia Theatre Artist, Painter and Set Designer Asim Basu
- ASIMO — Honda's humanoid robot Asimo
- Asir, Iran — City in Mohr County, Fars Province Asir, Iran
- Ask.com — history, features, and role as a question-focused search engine Ask.com
- Askar Akayev — First President of Kyrgyzstan (1990–2005) Askar Akayev
- Askar Mamin — Kazakh politician and former Prime Minister Askar Mamin
- Aske — Burzum EP recorded at Grieg Hall (1992), released 1993 Aske (EP)
- Askersund — small Swedish town and municipal seat Askersund
- Askersund Municipality (Askersunds kommun) Askersund Municipality
- Askham, Eden, Cumbria Askham
- Askim — town and former municipality in southeastern Norway Askim
- Askola — municipality in southern Finland Askola
- Aslak Brekke — Norwegian stev singer and folksong performer Aslak Brekke
- Aslak Brekke og visune hans
- Aslan Bzhania — Abkhaz politician and President since 2020 Aslan Bzhania
- Åsleik Engmark
- Asma al‑Assad — First Lady of Syria: biography, public role, and controversies Asma al-Assad
- Asma Jahangir: Pakistani Human Rights Lawyer and Activist Asma Jahangir
- Asmara — capital and modernist city of Eritrea Asmara
- Asnelles — coastal commune in Calvados, Normandy, France Asnelles
- Asnières-en-Bessin
- Asnières-sous-Bois
- Asnières-sur-Saône
- Asnières-sur-Seine: a dense, historic suburb of Paris Asnières-sur-Seine
- Asnières-sur-Vègre — a small commune in Sarthe, Pays de la Loire Asnières-sur-Vègre
- Aso Kujū National Park
- Aso Shrine (Aso Jinja) — Shinto sanctuary on Mount Aso's volcanic caldera Aso Shrine
- Asoka K. J. Jayawardena — Major General and Governor of the North Eastern Province Asoka Jayawardena
- Asotin County, Washington
- ASP.NET — Microsoft web application framework ASP.NET
- Aspach — European place name in Germany and France Aspach
- Aspach-le-Bas, commune in Haut-Rhin, Grand Est, France Aspach-le-Bas
- Aspach-le-Haut — former commune in Haut-Rhin, France Aspach-le-Haut
- Aspach-Michelbach: a commune nouvelle in Haut-Rhin, France Aspach-Michelbach
- Aspach (Haut-Rhin) — Commune in eastern France Aspach, Haut-Rhin
- Asparagaceae: the asparagus family of flowering plants Asparagaceae
- Asparagales — order of monocot flowering plants Asparagales
- Asparagus: botany, cultivation, uses, and notable facts Asparagus
- Asparagus officinalis (garden asparagus) Asparagus officinalis
- Aspartame (E951): properties, uses, history and safety Aspartame
- Aspatria: market town and community in Allerdale, Cumbria Aspatria
- Aspect
- Aspen (Populus): description, biology, uses and notable facts Aspen
- Aspen, Colorado — mountain resort town and historic mining city Aspen, Colorado
- Asperg — town in Ludwigsburg district, Baden-Württemberg, Germany Asperg
- Asperger syndrome — overview, characteristics, history and support Asperger syndrome
- Aspergillus: biology, ecology, and significance of a widespread fungal genus Aspergillus
- Aspergillus flavus: biology, health risks, and agricultural impact Aspergillus flavus
- Asperjoc: former commune in Ardèche, now part of Vallées-d'Antraigues-Asperjoc Asperjoc
- Aspermont, Texas
- Asphalt (bitumen): composition, uses, history and environmental issues Asphalt
- Asphyxia (asphyxiation): causes, mechanisms, and clinical overview Asphyxia
- Aspidogastrea: primitive flukes with a distinctive adhesive disc Aspidogastrea
- Aspinwall, Iowa
- Aspiration (phonetics): breathy airflow and its role in speech Aspiration
- Aspirator: Venturi-based vacuum devices and their uses Aspirator
- Aspirin (acetylsalicylic acid): uses, mechanism, history and precautions Aspirin
- Aspremont (Alpes-Maritimes): hilltop commune in Provence-Alpes-Côte d'Azur Aspremont, Alpes-Maritimes
- Asques, Gironde
- Asques (Tarn-et-Garonne): commune in southern France Asques, Tarn-et-Garonne
- Asquins — commune in Yonne, France Asquins
- Ass — the donkey and the word: biology, history, and meanings Ass
- Assa Abloy: Global leader in locks, door hardware and access systems Assa Abloy
- Assainvillers, Somme — Commune in Hauts-de-France, Northern France Assainvillers
- Assam: Northeastern Indian state of rivers, tea and biodiversity Assam
- Assamese language (অসমীয়া) Assamese language
- Assaria, Kansas
- Assassin bug (Reduviidae): predatory true bugs and their significance Assassin bug
- Assassin's Creed (video game franchise) Assassin's Creed
- Assassination: Definition, History, Motives, and Impact Assassination
- Assassination attempt on Ronald Reagan (March 30, 1981) Assassination attempt on Ronald Reagan
- Assassination of Abraham Lincoln
- Assassination of Andrei Karlov
- Assassination of Archduke Franz Ferdinand of Austria (1914) Assassination of Archduke Franz Ferdinand of Austria
- Assassination of President James A. Garfield Assassination of James A. Garfield
- Assassination of John F. Kennedy
- Assassination of Julius Caesar (15 March 44 BC) Assassination of Julius Caesar
- Assassination of Mahatma Gandhi (1948) Assassination of Mahatma Gandhi
- Assassination of Martin Luther King Jr.
- Assassination of Olof Palme
- Assassination of Orlando Letelier
- Assassination of Qasem Soleimani
- Assassination of Robert F. Kennedy
- Assassination of William McKinley
- Assat — Commune in Pyrénées-Atlantiques, France Assat
- Assata Shakur: activist, convict, and exiled figure Assata Shakur
- Assault (law): definitions, elements, types and defenses Assault
- Assault rifle: definition, history, characteristics, and global impact Assault rifle
- Asse (Belgium): Municipality in Flemish Brabant Asse
- Assé-le-Bérenger
- Assé-le-Boisne
- Assé-le-Riboul: Commune in Sarthe, Pays de la Loire, France Assé-le-Riboul
- Assembler: Program that Converts Assembly Language into Machine Code Assembler
- Assemblies of God
- Assembly language programming language
- Assembly line (manufacturing process) Assembly line
- Assembly of Experts: Iran's Council of Islamic Jurists Responsible for the Supreme Leader Assembly of Experts
- Assembly of Kosovo
- Assen — capital city of Drenthe and centre of culture and motorsport Assen
- Assenay — commune in the Aube department of France Assenay
- Assencières, Aube: Commune in north-central France Assencières
- Assenede — municipality in East Flanders, Belgium Assenede
- Assens (Vaud) — Swiss municipality overview Assens, Switzerland
- Assesse — municipality in Namur province, Belgium Assesse
- Asset: Definition, Types, Valuation and Role in Business Asset
- Assevillers — small commune in the Somme, Hauts‑de‑France Assevillers
- Assheton Gorton: British Film Production Designer (1930–2014) Assheton Gorton
- Asshole (slang term for the anus and an insult) Asshole
- Assi Dayan (Israeli actor, director and screenwriter) Assi Dayan
- Assia Djebar: Algerian Novelist, Filmmaker and Chronicler of Women's History Assia Djebar
- Assimilation
- Assimilation (biology): uptake and incorporation of nutrients Assimilation (biology)
- Assington, Suffolk Assington
- Assiniboine River
- Assis-sur-Serre — commune in Aisne, northern France Assis-sur-Serre
- Assisi: Umbrian town of Saint Francis, medieval art and pilgrimage Assisi
- Assist (association football) Assist (football)
- Assist (ice hockey)
- Assistant Secretary: role, rank, and variations in government Assistant secretary
- Assisted living: housing and support for adults who need daily help Assisted living
- Assisted suicide: definition, law, practice, and ethical issues Assisted suicide
- Associação Atlética Internacional (Inter de Limeira) Associação Atlética Internacional (Limeira)
- Associação Atlética Ponte Preta
- Associação Chapecoense de Futebol (Chapecoense) Associação Chapecoense de Futebol
- Associação Desportiva São Caetano
- Associação Portuguesa de Desportos
- Associate Justice of the Supreme Court of the Philippines
- Associate Justice of the Supreme Court of the United States
- Associated Board of the Royal Schools of Music (ABRSM) Associated Board of the Royal Schools of Music
- Associated Press (AP) — American not-for-profit news cooperative Associated Press
- Association
- Association Aéronautique et Astronautique de France (3AF) Association Aéronautique et Astronautique de France
- Association des professionnels navigants de l'aviation (APNA) Association des professionnels navigants de l'aviation
- Association fallacy: guilt by association and honor by association Association fallacy
- Association football (soccer): rules, history, play, and global impact Association football
- Association football pitch
- Association for Library Service to Children (ALSC): Advocating Children's Library Services Association for Library Service to Children
- Association of American Universities (AAU) Association of American Universities
- Association of Football Federations of Azerbaijan (AFFA) Association of Football Federations of Azerbaijan
- Association of Southeast Asian Nations (ASEAN) Association of Southeast Asian Nations
- Association of Spanish Language Academies (Asociación de Academias de la Lengua Española) Association of Spanish Language Academies
- Association of Tennis Professionals (ATP) Association of Tennis Professionals
- Associativity: definition, examples, and significance in mathematics and computing Associativity
- Assolo (Sardinia, Italy) Assolo
- Asson — commune in Pyrénées-Atlantiques, southwestern France Asson
- Assumption College (Thailand): History, campus, traditions and influence Assumption College (Thailand)
- Assumption Parish, Louisiana
- Assumption, Illinois
- Assyria: ancient state and empire of the Upper Tigris Assyria
- Assyrian calendar — traditional Assyrian era beginning in 4750 BCE Assyrian calendar
- Assyrian Church of the East: history, doctrine and global presence Assyrian Church of the East
- Assyrian genocide (Sayfo) — mass violence against Assyrians in the early 20th century Assyrian genocide
- Assyrian people: history, language, religion and modern diaspora Assyrian people
- Assyriska Föreningen (Assyriska FF) — Swedish Assyrian football club Assyriska Föreningen
- Asta Nielsen: Danish Pioneer of Silent Cinema and International Star Asta Nielsen
- Astaffort (Lot‑et‑Garonne) — commune in southwestern France Astaffort
- Astana — capital city of Kazakhstan Astana
- Astano (municipality in Ticino) Astano
- Astara District (Azerbaijan) Astara District
- Astarte: Ancient Near Eastern goddess of love, war, and the morning star Astarte
- Astatine (Element 85): Properties, Isotopes, History and Uses Astatine
- Astatula, Florida: small town profile and local overview Astatula, Florida
- Aste-Béon — commune in the Pyrénées-Atlantiques, southwestern France Aste-Béon
- ASTech Paris Région — Île-de-France aerospace cluster ASTech Paris Région
- Asten, Netherlands
- Aster (genus) — Old World asters and their taxonomy Aster (genus)
- Asteraceae (Compositae) — the daisy and sunflower family Asteraceae
- Asterales: the order of composite and related flowering plants Asterales
- Asteria — Titaness of Falling Stars and the Island Delos Asteria
- Asteridae: traditional Linnaean subclass and the modern asterid clade Asteridae
- Asterids: the large clade of flowering plants within the eudicots Asterids
- Asterisk (typographic symbol) Asterisk
- Asterix (Astérix) — the French comic about the Gaulish hero Asterix
- Asteroid: Small rocky bodies of the Solar System Asteroid
- Asteroid belt (Main Belt) between Mars and Jupiter Asteroid belt
- Asteroid impact prediction: methods, limits, and planetary defense Asteroid impact prediction
- Asteroid moon
- Asteroid spectral types: classification, causes, and importance Asteroid spectral types
- Asteroids (1979 arcade video game) Asteroids (video game)
- Astet — Mountain commune in Ardèche, France Astet
- Asthenosphere: the weak, flowing layer beneath Earth's lithosphere Asthenosphere
- Asthma: Causes, Symptoms, Management, and Prevention Asthma
- Asti (Piedmont, Italy) Asti
- Astigmatism: causes, symptoms, diagnosis and correction Astigmatism
- Astillé (Mayenne, Pays de la Loire) Astillé
- Astis (commune in Pyrénées-Atlantiques, France) Astis
- Astley Baker Davies
- Astola Island — Pakistan’s offshore island in the northern Arabian Sea Astola Island
- Aston Martin: British luxury sports-car manufacturer Aston Martin
- Aston Merrygold — British singer, dancer and television personality Aston Merrygold
- Aston University
- Aston Villa F.C.: History, Stadium, Honours and Identity Aston Villa F.C.
- Astor Markhor (Flare‑horned Markhor): overview, range and conservation Astor markhor
- Ástor Piazzolla (1921–1992) — Composer and Architect of Nuevo Tango Ástor Piazzolla
- Astore District, Gilgit–Baltistan: geography, administration and significance Astore District
- Astoria, Illinois
- Astoria, Oregon — historic river port at the mouth of the Columbia Astoria, Oregon
- Åstorp — town and municipal seat in Scania, Sweden Åstorp
- Åstorp Municipality
- Astraea — Greek goddess of justice and the star‑maiden Astraea
- Astraphobia: fear of thunder and lightning Astraphobia
- Astrid Kirchherr: Photographer of the Beatles' Hamburg Years Astrid Kirchherr
- Astrid Lindgren: Swedish Children's Author and Cultural Icon Astrid Lindgren
- Astrid Nøklebye Heiberg
- Astro (television) — Malaysian satellite TV and radio service Astro (television)
- Astro Boy (Tetsuwan Atomu) — Japanese manga and anime series Astro Boy
- Astrobiology: the scientific study of life beyond Earth Astrobiology
- Astrocyte
- Astrocytoma — brain tumor originating from astrocytes Astrocytoma
- Astrodome (Houston) Astrodome
- Astrodon — Early Cretaceous sauropod known for star-shaped teeth Astrodon
- Astrodynamics: Motion, Orbits, and Spacecraft Navigation Astrodynamics
- Astrolabe: ancient astronomical instrument and navigational calculator Astrolabe
- Astrology: concepts, history, and contemporary practice Astrology
- Astrometry: Measuring Positions, Motions and Distances of Celestial Bodies Astrometry
- Astronaut: People Trained to Travel and Work in Space Astronaut
- Astronomer — scientist who studies celestial objects and the universe Astronomer
- Astronomer Royal
- Astronomical Almanac — Annual Ephemerides, Time Standards, and Celestial Navigation Data Astronomical Almanac
- Astronomical clock: design, history, and cultural significance Astronomical clock
- Astronomical object: definition, types, formation, and significance Astronomical object
- Astronomical spectroscopy: principles, history, and applications Astronomical spectroscopy
- Astronomical unit (AU): definition, history, and uses Astronomical unit
- Astronomy: the scientific study of celestial objects, history and methods Astronomy
- Astrophysics: study of the physics of the cosmos Astrophysics
- Astrophytum — genus of star-shaped and patterned cacti Astrophytum
- Asturian language: overview, classification, history and current status Asturian language
- Asturias (Principality of Asturias) Asturias
- Asturias Airport (Oviedo–Asturias Airport) Asturias Airport
- Astyanax (son of Hector) Astyanax
- Asuel — village and former municipality in the canton of Jura, Switzerland Asuel
- Asuka Kazama (Tekken character) Asuka Kazama
- Asuka period — formative era of early Japan (c. 538–710) Asuka period
- Asuka (Yamato): ancient capital and cradle of the Asuka period Asuka, Yamato
- Asuna Tanaka (Japanese footballer) Asuna Tanaka
- Asunción: Paraguay’s capital and principal port Asunción
- Asunción Balaguer — Spanish actress and stage performer Asunción Balaguer
- Asuni — small inland comune in the Province of Oristano, Sardinia Asuni
- Asura: Supernatural beings in Hindu and Buddhist traditions Asura
- ASUS (ASUSTeK Computer Inc.) — Taiwanese computer hardware and electronics maker Asus
- ASUS Eee PC
- Aswan — City on the Nile in southern Egypt Aswan
- Aswan Dam
- Aswan Governorate
- Aswan High Dam
- Aswan Low Dam (Old Aswan Dam) — history, design and legacy Aswan Low Dam
- Asylum: meanings, history, legal concepts and cultural uses Asylum
- Asylum (Kiss album, 1985) Asylum (album)
- Asylum seeker
- Asynchronous Transfer Mode (ATM) — fixed‑cell switching for QoS and carrier networks Asynchronous Transfer Mode
- Asyut — Major city of Upper Egypt Asyut
- Asyut Governorate
- At bat (baseball): definition, rules, and statistical use At bat
- At Play in the Fields of the Lord (1991 film) At Play in the Fields of the Lord
- At sign (@): origin, uses, and cultural significance At sign
- At the Gates (Swedish melodic death metal band) At the Gates
- At the Movies (U.S. TV series)
- At War with Satan — Venom album At War with Satan
- AT&T Inc. AT&T
- AT&T Stadium
- AT&T U-verse: Overview, Services, History and Availability AT&T U-verse
- Ata Kandó: Hungarian–Dutch photographer and humanitarian Ata Kandó
- Atacama Desert: Geography, Climate, History, and Scientific Value Atacama Desert
- Atacama Large Millimeter/submillimeter Array (ALMA) Atacama Large Millimeter Array
- Atacama Region (III), Chile Atacama Region
- Atahualpa — last sovereign Sapa Inca Atahualpa
- Atakora Department (Benin): geography, people, administration Atakora Department
- Atal Bihari Vajpayee
- Atalanta — Greek mythic huntress and heroine Atalanta
- Atalanta B.C. — Professional football club from Bergamo, Italy Atalanta B.C.
- Atalissa, Iowa
- Atanas Kirov — Bulgarian bantamweight weightlifter (1946–2017) Atanas Kirov
- Atanas Semerdzhiev — Bulgarian general and politician (1924–2015) Atanas Semerdzhiev
- Atanase Sciotnic — Romanian sprint canoeist and world champion Atanase Sciotnic
- Atanasoff–Berry Computer
- Atari 2600 (Atari Video Computer System) Atari 2600