| Armbrøst | Ballesta |
| armbånd | brazalete |
| armbåndsur | reloj de pulsera |
| Armenien | Armenia |
| Armeniens flag | Bandera de Armenia |
| Armeniens Revolutionære Føderation | Dashnak |
| Armenier | armenio |
| Armeniere | armenio |
| Armenierne | Pueblo armenio |
| armenisk | armenio |
| armeniske | armenio |
| armeniskt | armenio |
| armensk | armeno |
| armhule | sobaco |
| Armillarsfære | Esfera armilar |
| Armin Meiwes | Armin Meiwes |
| Arminia Bielefeld | Arminia Bielefeld |
| Army of Tennessee | Ejército del Tennessee |
| Armé | Ejército |
| Arne Christer Fuglesang | Christer Fuglesang |
| Arnhem | Arnhem |
| Arno | Arno |
| Arno Allan Penzias | Arno Allan Penzias |
| Arnold Schwarzenegger | Arnold Schwarzenegger |
| Arnold Schönberg | Arnold Schönberg |
| Arnæs | Eskrima |
| Aroldo | Stiffelio |
| aromastof | condimento |
| Aromatisk forbindelse | Hidrocarburo aromático |
| aromatiske forbindelser | compuestos aromáticos |
| aromatiske hydrocarboner | hidrocarburos aromáticos |
| Aron | Aarón |
| ARoS Aarhus Kunstmuseum | ARoS |
| arp | costra láctea |
| Arpanet | ARPANET |
| Arrakis | Arrakis |
| Arras | Arrás |
| Arrigo Boito | Arrigo Boito |
| Arrondissement | Arrondissement |
| arsen | arsénico |
| Arsen Kotsojev | Arsen Kotsoyev |
| Arsin | Arsina |
| Arsène Wenger | Arsène Wenger |
| art | especie |
| Art Buchwald | Art Buchwald |
| Art deco | Art decó |
| Art Garfunkel | Art Garfunkel |
| Art Ross Trophy | Trofeo Art Ross |
| Art Tatum | Art Tatum |
| Artemis | Artemisa |
| Artemis Fowl | Artemis Fowl |
| Artemistemplet i Efesos | Templo de Artemisa |
| Arterie | Arteria |
| Arternes Oprindelse | El origen de las especies |
| Arthedain | Arthedain |
| Arthur Bliss | Arthur Bliss |
| Arthur Compton | Arthur Compton |
| Arthur Conan Doyle | Arthur Conan Doyle |
| Arthur Evans | Arthur Evans |
| Arthur Honegger | Arthur Honegger |
| Arthur Koestler | Arthur Koestler |
| Arthur Miller | Arthur Miller |
| Arthur Rimbaud | Arthur Rimbaud |
| Arthur Schopenhauer | Arthur Schopenhauer |
| Arthur Seyss-Inquart | Arthur Seyß-Inquart |
| Arthur Stanley Eddington | Arthur Stanley Eddington |
| Arthur Sullivan | Arthur Sullivan |
| Arthur Weasley | Arthur Weasley |
| Arthur Wellesley | Arthur Wellesley |
| articulata | articulados |
| artikel | artículo |
| artikulation | articulación |
| Artilleri | Artillería |
| artiskok | alcachofa |
| Artur Balder | Artur Balder |
| Artur Rubinstein | Arthur Rubinstein |
| Arturo Pérez-Reverte | Arturo Pérez-Reverte |
| Arturo Toscanini | Arturo Toscanini |
| Aruba | Aruba |
| Arum | Arum |
| Arum-familien | Araceae |
| Arunachal makak | Macaca munzala |
| Arunachal Pradesh | Arunachal Pradesh |
| Arv og miljø | Innato o adquirido |
| arveanlæg | grupo genético |
| arvelighedslære | genética |
| Arveligt monarki | Monarquía hereditaria |
| Arvemasse | Genoma |
