Search by letter: A
Search by letter
Search by letter: A
- Atari 5200 SuperSystem: overview, design, games and legacy Atari 5200
- Atari 7800: mid-1980s 8‑bit home video game console Atari 7800
- Atari Jaguar (1993 video game console) Atari Jaguar
- Atari Lynx — Atari's Color Handheld Console Atari Lynx
- Atari, Inc.: Pioneer of Arcade Games and Home Computers Atari, Inc.
- Atascosa County, Texas
- Atatürk International Airport (Istanbul) Atatürk International Airport
- Atatürk Olympic Stadium
- Ataullah Behmanesh: Iranian Wrestler and Pioneer Sports Broadcaster Ataullah Behmanesh
- Atauro Island (Timor-Leste): geography, communities, and natural features Atauro
- Ataxia: causes, types, signs, diagnosis and management Ataxia
- ATB (André Tanneberger) — German DJ, producer and electronic musician ATB
- Atchison County, Kansas — geography, history, communities and heritage Atchison County, Kansas
- Atchison County, Missouri
- Atchison, Kansas: Riverfront City, History, and Cultural Highlights Atchison, Kansas
- Atchison, Topeka and Santa Fe Railway (AT&SF) Atchison, Topeka and Santa Fe Railway
- Atef Ebeid — Egyptian politician and prime minister (1932–2014) Atef Ebeid
- Atelopus (harlequin frogs): appearance, habitat, decline, and conservation Atelopus
- Jambato Toad (Atelopus ignescens): Rediscovery and Conservation in the Ecuadorian Andes Atelopus ignescens
- Atelopus longirostris — the long-snouted harlequin frog of Ecuador Atelopus longirostris
- Aten (Ancient Egyptian sun disk deity) Aten
- Ateneo de Manila University
- Atenism — the Amarna sun-disk religion of ancient Egypt Atenism
- Aterno–Pescara: River of Abruzzo Aterno-Pescara
- Ath (Belgium) — municipality in Hainaut Ath
- Athanasian Creed (Quicumque vult) Athanasian Creed
- Atharva Veda: Text, Themes, History and Significance Atharva Veda
- Athée (Mayenne) — small commune in Pays de la Loire, France Athée, Mayenne
- Atheism: absence of belief in deities Atheism
- Æthelbald of Wessex (son of Æthelwulf) Athelbald of Wessex
- Æthelbert of Wessex — mid-9th century West Saxon ruler Athelbert of Wessex
- Athelfrith of Bernicia (d. c. 616) Athelfrith of Bernicia
- Athelheard of Wessex (Æthelheard), King of Wessex 726–740 Athelheard of Wessex
- Æthelred (Athelred) of Wessex (c. 845–871) Athelred of Wessex
- Athelstan (Æthelstan): First King to Rule a Unified England, c.924–939 Athelstan
- Athelwald of Deira
- Athelwulf of Wessex (Æthelwulf) — King of Wessex, 839–858 Athelwulf of Wessex
- Athena: Greek goddess of wisdom, warfare, and crafts Athena
- Athens: History, culture, and modern role of Greece's capital Athens
- Athens County, Ohio
- Athens, Alabama
- Athens, Georgia: College Town, Cultural Hub, and County Seat Athens, Georgia
- Athens, Illinois — Overview of a Small Menard County City Athens, Illinois
- Athens, Ohio — a southeastern Ohio college city Athens, Ohio
- Athens, Texas
- Atheris — African bush vipers (arboreal venomous snakes) Atheris
- Atherstone, Warwickshire Atherstone
- Atherton, California
- Athie, Yonne
- Athies-sous-Laon: commune near Laon in the Aisne department of northern France Athies-sous-Laon
- Athies (Pas-de-Calais) — commune in northern France Athies, Pas-de-Calais
- Athies, Somme — Commune in Hauts-de-France Athies, Somme
- Athina Onassis Roussel Athina Onassis
- Athlete
- Athlete (band)
- Athlete's foot (tinea pedis) Athlete's foot
- Athletic — meaning, characteristics, and uses Athletic
- Athletic Bilbao
- Athletic director — administrator of school and college sports programs Athletic director
- Athletic nickname
- Athletic shoe: design, types, history and cultural impact Athletic shoe
- Athletics (track and field and related events) Athletics
- Athletics (sport): overview, disciplines, history, and significance Athletics (sport)
- Athletics at the Summer Olympics
- Athol Fugard: South African Playwright and Cultural Figure Athol Fugard
- Athol, Idaho
- Athol, Kansas
- Athos-Aspis — commune in Pyrénées-Atlantiques, southwestern France Athos-Aspis
- Athous — a genus of click beetles Athous
- ATI Technologies
- Atka, Alaska — remote city on Atka Island in the Aleutian chain Atka, Alaska
- Atkins, Arkansas
- Atkins, Iowa
- Atkinson County, Georgia
- Atkinson, Illinois
- Atlacomulco Municipality
- Atlanta, Georgia Atlanta
- Atlanta Braves — History, achievements, stadium and notable figures Atlanta Braves
- Atlanta Campaign (1864): Sherman's Advance and the Fall of Atlanta Atlanta Campaign
- Atlanta Chiefs (American professional soccer club) Atlanta Chiefs
- Atlanta Falcons
- Atlanta Flames (NHL franchise, 1972–1980) Atlanta Flames
- Atlanta Hawks
- Atlanta metropolitan area
- Atlanta Motor Speedway
- Atlanta Rhythm Section
- Atlanta Thrashers
- Atlanta United FC
- Atlanta, Illinois
- Atlanta, Indiana
- Atlanta, Kansas — small rural city in Cowley County Atlanta, Kansas
- Atlanta, Louisiana
- Atlanta, Texas — city profile, history, and local features Atlanta, Texas
- Atlante F.C.: Mexican football club based in Cancún Atlante F.C.
- Atlantean language
- Atlantic 10 Conference
- Atlantic Beach, Florida: overview, history, and community Atlantic Beach, Florida
- Atlantic Canada (the Atlantic provinces of Canada) Atlantic Canada
- Atlantic City
- Atlantic City (1980) — Louis Malle's romantic crime drama Atlantic City (movie)
- Atlantic City, New Jersey: resort history, boardwalk, casinos and transport Atlantic City, New Jersey
- Atlantic City, Wyoming
- Atlantic Coast Conference (ACC) Atlantic Coast Conference
- Atlantic cod (Gadus morhua): biology, fisheries and conservation Atlantic cod
- Atlantic County, New Jersey: Overview, History, Geography, and Economy Atlantic County, New Jersey
- Atlantic Division (NBA)
- Atlantic Division (NHL)
- Atlantic herring (Clupea harengus) Atlantic herring
- Atlantic Hockey (NCAA Division I men's ice hockey conference) Atlantic Hockey
- Atlantic hurricane
- Atlantic mackerel (Scomber scombrus) Atlantic mackerel
- Atlantic Ocean: geography, history, ecology, and human uses Atlantic Ocean
- Atlantic Records
- Atlantic sailfish (Istiophorus albicans) Atlantic sailfish
- Atlantic salmon (Salmo salar): biology, distribution, life cycle and conservation Atlantic salmon
- Atlantic slave trade: history, scale, and legacy Atlantic slave trade
- Atlantic Standard Time (AST) Atlantic Standard Time Zone
- Atlantic sturgeon — large anadromous fish of the Atlantic coast Atlantic sturgeon
- ASUN Conference (Atlantic Sun Conference) Atlantic Sun Conference
- Atlantic Theater Company
- Atlantic Wall — World War II coastal defenses of Nazi Germany Atlantic Wall
- Atlantic, Iowa
- Atlántico Department (Colombia): geography, history and culture Atlántico Department
- Atlantique Department (Benin) Atlantique Department
- Atlantis: origins, accounts, interpretations, and cultural legacy Atlantis
- Atlantis, Florida
- Atlas: collections of maps and mathematical charts Atlas
- Atlas (C1) — the first cervical vertebra of the spine Atlas (anatomy)
- Atlas (missile) — U.S. ICBM turned long-lived launch vehicle family Atlas (missile)
- Atlas (moon) — Saturn's small ring‑edge satellite Atlas (moon)
- Atlas (mythology): Titan condemned to bear the heavens Atlas (mythology)
- Atlas cedar (Cedrus atlantica) — description, distribution, uses, and conservation Atlas cedar
- Atlas Computer (University of Manchester) Atlas Computer (Manchester)
- ATLAS experiment (A Toroidal LHC ApparatuS) ATLAS experiment
- Atlas F.C.: Club Social y Deportivo Atlas of Guadalajara Atlas F.C.
- Atlas Mountains
- Atlas Shrugged
- Atlas V: ULA’s Modular Expendable Launch Vehicle Atlas V
- Atle Hammer — Norwegian Jazz Trumpeter and Engineer (1932–2017) Atle Hammer
- Atlético Clube Goianiense
- Atlético Junior (Junior de Barranquilla) Atlético Junior
- Atlético Madrid: history, identity, stadium, players and achievements Atlético Madrid
- Atlético Nacional: history, identity, stadium and achievements Atlético Nacional
- Atletico Piombino: Italian football club from Piombino, Tuscany Atletico Piombino
- Atli Eðvaldsson — Icelandic footballer and manager Atli Eðvaldsson
- Common meanings of ATM across banking, science, computing, genetics, and finance ATM
- Atmel AVR microcontrollers: overview, architecture, and uses Atmel AVR
- Atmore, Alabama — small city in Escambia County Atmore, Alabama
- Atmosphere (unit)
- Atmosphere of Earth: composition, structure, functions, and origins Atmosphere of Earth
- Atmosphere of Mars
- Atmosphere of Venus: composition, structure, and climatic significance Atmosphere of Venus
- Atmospheric chemistry: composition, processes, and environmental impacts Atmospheric chemistry
- Atmospheric circulation: global wind systems and their drivers Atmospheric circulation
- Atmospheric convection: processes, types, and role in weather and flying Atmospheric convection
- Atmospheric pressure
- Atoka County, Oklahoma
- Atoka, Oklahoma
- Atoll: formation, features, ecology, and human significance Atoll
- Atom: the basic unit of matter Atom
- Atom (web feed) — format and publishing protocol Atom (feed)
- Atom Egoyan — Canadian‑Armenian Filmmaker and Storyteller Atom Egoyan
- Atomic Betty
- Atomic bombings of Hiroshima and Nagasaki
- Atomic City, Idaho — small town linked to America's early nuclear research Atomic City, Idaho
- Atomic clock — ultra-precise timekeeping using atomic transitions Atomic clock
- Atomic Energy Commission (United States) Atomic Energy Commission
- Atomic force microscope
- Atomic Kitten
- Atomic mass and isotopic mass: definition, units, and relation to mass number Atomic mass
- Atomic nucleus the center of an atom
- Atomic number (Z) Atomic number
- Atomic orbital
- Atomic physics: structure, methods, history, and applications Atomic physics
- Atomic radius
- Atomic theory: development, structure, and applications Atomic theory
- Atomicity (Transactions and Computing) Atomicity
- Atomkraft (English heavy metal band) Atomkraft
- Atoms for Peace: Radiohead and Red Hot Chili Peppers collaboration band Atoms for Peace (band)
- Atomu Tanaka — Japanese association football player Atomu Tanaka
- Atonement (religious concept) Atonement
- Atonement (2007 film) Atonement (movie)
- ATP synthase: the rotary enzyme that makes cellular ATP ATP synthase
- Atqasuk, Alaska — a North Slope Iñupiat community Atqasuk, Alaska
- Atrax: the Sydney funnel-web spiders — overview, venom, and distinctions Atrax
- Atreyu (American metalcore band) Atreyu
- Atri — Vedic sage and one of the Saptarishi Atri
- Atrial natriuretic peptide: heart-derived hormone that regulates blood volume and sodium Atrial-natriuretic peptide
- Atrium (architectural space) Atrium
- Atropatene — ancient kingdom in northern Iran Atropatene
- Atropates — Persian satrap and founder of Atropatene Atropates
- Atropine — pharmacology, history, uses, and safety Atropine
- Atropoides — the jumping pitvipers: overview, traits and distribution Atropoides
- Atsuhiko Ejiri
- Atsuhiro Miura
- Atsuko Ikeda
- Atsuo Watanabe — Japanese football (soccer) player, born 1974 Atsuo Watanabe
- Atsushi Aoki — Japanese professional wrestler (1977–2019) Atsushi Aoki
- Atsushi Ichimura
- Atsushi Inoue
- Atsushi Kimura (Japanese footballer, born 1984) Atsushi Kimura
- Atsushi Mio — Japanese professional footballer Atsushi Mio
- Atsushi Nagai — Japanese footballer (born 1974) Atsushi Nagai
- Atsushi Natori — Japanese football player (born 1961) Atsushi Natori
- Atsushi Uchiyama
- Atsushi Yanagisawa
- Atsushi Yoneyama
- Atsuto Oishi (大石 篤人) — Japanese former football player Atsuto Oishi
- Atsuto Uchida: Japanese right-back and international footballer Atsuto Uchida
- Atsutoshi Nishida (1943–2017) — Japanese business executive Atsutoshi Nishida
- Atsuyoshi Furuta — Japanese footballer and national team representative Atsuyoshi Furuta
- ATTAC: Association for the Taxation of Financial Transactions for the Aid of Citizens Attac (organization)
- Attack: concept, forms, and role in conflict and competition Attack
- Attack (Swedish pop group) Attack (band)
- Attack aircraft
- Attack model (cryptography) Attack model
- Attack on Pearl Harbor surprise attack by Japan against the neutral United States naval base
- Attack on Titan (Shingeki no Kyojin) Attack on Titan
- Attacks by Islamic extremists in Bangladesh
- Attacus atlas (atlas moth) Attacus atlas
- Attala County, Mississippi
- Attalens: Swiss municipality in Veveyse, canton of Fribourg Attalens
- Attalla, Alabama
- Attaphol Buspakom — Thai football player and coach Attaphol Buspakom
- Attelwil — former municipality in Aargau, Switzerland Attelwil
- Attenhofen — Municipality in Kelheim, Bavaria, Germany Attenhofen
- Attenschwiller — commune in Haut-Rhin, Alsace (eastern France) Attenschwiller
- Attention-deficit hyperactivity disorder (ADHD): overview, symptoms, causes, and management Attention-deficit hyperactivity disorder
- Attert — municipality in the Belgian province of Luxembourg Attert
- Attic (Loft): Space Directly Beneath a Building's Roof Attic
- Attica — region surrounding Athens in Greece Attica
- Attica Correctional Facility
- Attica, Indiana: Overview, history, and local features Attica, Indiana
- Attica, Kansas — small city in Harper County Attica, Kansas
- Atticus Finch: Character, Role, and Cultural Legacy Atticus Finch
- Atticus Shaffer
- Attignat — commune in Ain, Auvergne-Rhône-Alpes, France Attignat
- Áttila de Carvalho
- Attila Ladinszky — Hungarian football striker (1949–2020) Attila Ladinszky
- Attila the Hun: ruler of the Hunnic confederation (c.406–453) Attila the Hun
- Attilio Bignasca
- Attilio Nicora: Italian Cardinal and Vatican Financial Official Attilio Nicora
- Attilly — commune in the Aisne department of northern France Attilly
- Attin — commune in Pas-de-Calais, northern France Attin
- Attinghausen: Municipality in the Canton of Uri, Switzerland Attinghausen
- Attis: The Phrygian Vegetation Deity and Consort of Cybele Attis
- Attiswil — municipality in the canton of Bern, Switzerland Attiswil
- Attleborough (Norfolk) — overview, history and transport Attleborough
- Attnang-Puchheim, Upper Austria Attnang-Puchheim
- Attock, Punjab — city and district capital in Pakistan Attock
- Attock District — geography, history, administration, and points of interest Attock District
- Attock Tehsil — geography, administration, and regional significance Attock Tehsil
- Attorney General
- Attosecond (10⁻¹⁸ second): definition, generation, and applications Attosecond
- Attraction: forces, psychology, and cultural meanings Attraction
- Attribute–Value System Attribute-value system
- Attrition warfare: strategy of wearing down an opponent Attrition warfare
- Atum: Creator Deity of Ancient Egypt and Origin of the Gods Atum
- Åtvidaberg: Swedish industrial town in Östergötland Åtvidaberg
- Åtvidaberg Municipality
- Åtvidabergs FF
- Atwood, Illinois
- Atwood, Kansas
- Atwood, Oklahoma — profile of a small rural town Atwood, Oklahoma
- Atypical depression: features, causes, and treatment overview Atypical depression
- Atzara — a small Sardinian municipality in the Province of Nuoro Atzara
- Au cœur du stade — live album by Céline Dion Au cœur du stade
- Au pair: live-in cultural exchange and childcare arrangement Au pair
- Au, St. Gallen
- Au (Vorarlberg): Alpine municipality in the Bregenz Forest Au, Vorarlberg
- Au (Wädenswil), Canton of Zürich Au, Zürich
- Aubagne: Provençal town near Marseille Aubagne
- Aubange — municipality in the Belgian province of Luxembourg Aubange
- Aube — department in northeastern France Aube
- Aube (river)
- Aubel: a rural municipality in Liège province, Belgium Aubel
- Aubenas — town in Ardèche, France Aubenas
- Aubenas-les-Alpes
- Aubencheul-aux-Bois
- Aubenton (Aisne, France) Aubenton
- Aubercourt — Commune in the Somme, Hauts-de-France Aubercourt
- Aubergine (Eggplant) Aubergine
- Aubertin (commune in Pyrénées-Atlantiques, France) Aubertin
- Auberville (Calvados) Auberville
- Aubeterre (Aube) Aubeterre
- Aubiac, Gironde, France Aubiac, Gironde
- Aubie-et-Espessas — former commune in Gironde, France Aubie-et-Espessas
- Aubignan (Vaucluse, Provence-Alpes-Côte d'Azur) Aubignan
- Aubignas — commune in Ardèche, France Aubignas
- Aubigné-Racan — commune in Sarthe, Pays de la Loire, France Aubigné-Racan
- Aubignosc: commune in the Durance valley of Alpes-de-Haute-Provence Aubignosc
- Aubigny-aux-Kaisnes: a small commune in northern France Aubigny-aux-Kaisnes
- Aubigny-en-Artois — commune in Pas-de-Calais, northern France Aubigny-en-Artois
- Aubigny-en-Laonnois — commune in Aisne, northern France Aubigny-en-Laonnois
- Aubigny, Allier
- Aubigny, Calvados
- Aubigny (Somme) — commune in Hauts-de-France, northern France Aubigny, Somme
- Aubigny (Vendée): former commune in Pays de la Loire, now part of Aubigny‑les‑Clouzeaux Aubigny, Vendée
- Aubin-Saint-Vaast (commune in Pas-de-Calais, France) Aubin-Saint-Vaast
- Aubin (Pyrénées-Atlantiques) — commune in southwestern France Aubin, Pyrénées-Atlantiques