| Arkadia | Arcadia |
| Arkadij i Borys Strugaccy | Arkadi y Borís Strugatsky |
| Arkadij Wołodos | Arcadi Volodos |
| Arkadiusz | Arcadio |
| Arkady | Soportales |
| Arkady klasztorne | Girola |
| Arkansas | Arkansas |
| arkebuz | arcabuz |
| Arkezylaos | Arcesilao |
| Arkham | Arkham |
| Arkham Asylum | Asilo Arkham |
| Arkia | Arkia |
| Arkologia | Arcología |
| Arkona | Cabo Arkona |
| Arktur | Arturo |
| Arktyka | Ártico |
| arkusz | hoja |
| Arkusz elektroniczny | Hoja de cálculo |
| arkusz kalkulacyjny | hoja de cálculo |
| Arlberg | Arlberg |
| Arlekin i walentynki | Arlequín Enamorado |
| Arles | Arlés |
| Arles-sur-Tech | Arles de Tec |
| Arlington | Arlington |
| Arlon | Arlon |
| ARM Cuauhtémoc | Cuauhtémoc |
| Armageddon | Armageddon |
| Armagedon | Armagedón |
| Armagh | Condado de Armagh |
| Armagnac | Armañac |
| Armaillé | Armaillé |
| Armand Assante | Armand Assante |
| Armand Burbon-Conti | Armando de Borbón-Conti |
| Armand Caulaincourt | Armand Augustin Louis de Caulaincourt |
| Armand Fallières | Armand Fallières |
| Armand Fizeau | Hippolyte Fizeau |
| Armand Jean Richelieu | Cardenal Richelieu |
| Armand van Helden | Armand van Helden |
| Armando Guebuza | Armando Guebuza |
| armata | cañón |
| armatura | piezas |
| Armatura wodna | Válvula hidráulica |
| Armauer Hansen | Gerhard Armauer Hansen |
| Armawir | Armavir |
| Armen Tachtadżian | Armen Takhtajan |
| Armendarits | Armendarits |
| Armenelos | Armenelos |
| Armenia | Armenia |
| Armenia Inferior | Armenia Inferior |
| Armenia Mała | Reino armenio de Cilicia |
| Armenia w Konkursie Piosenki Eurowizji | Armenia en el Festival de la Canción de Eurovisión |
| Armenio Buenos Aires | Club Deportivo Armenio |
| Armenka | armenio |
| Armeńczyk | armenio |
| Armeńska Socjalistyczna Republika Radziecka | República Socialista Soviética de Armenia |
| armeński | armeno |
| armia | armada |
| Armia Austro-Węgier | Ejército Austrohúngaro |
| Armia Czerwona | Ejército Rojo |
| Armia Krajowa | Armia Krajowa |
| Armia rzymska | Ejército de la Roma Antigua |
| Armia Stanów Zjednoczonych | Ejército de los Estados Unidos |
| Armia Zbawienia | Ejército de Salvación |
| Armida | Armida |
| Armin Hary | Armin Hary |
| Armin Meiwes | Armin Meiwes |
| Armin van Buuren | Armin van Buuren |
| Arminia Bielefeld | Arminia Bielefeld |
| Arminianizm | Arminianismo |
| Arminius | Arminio |
| Arminiusz | Arminio |
| Armissan | Armissan |
| Armoryka | Armórica |
| Armoy | Armoy |
| Armstrong | Armstrong |
| Arnac-Pompadour | Arnac-Pompadour |
| Arnaldo Forlani | Arnaldo Forlani |
| Arnaldo Tamayo Méndez | Arnaldo Tamayo Méndez |
| Arnaud Amaury | Arnaldo Amalric |
| Arnaud de Toroges | Arnaldo de Torroja |
| Arnaud Di Pasquale | Arnaud di Pasquale |
| Arnay-le-Duc | Arnay-le-Duc |
| Arne Friedrich | Arne Friedrich |
| Arne Wilhelm Kaurin Tiselius | Arne Wilhelm Kaurin Tiselius |
| Arnex-sur-Nyon | Arnex-sur-Nyon |
| Arnex-sur-Orbe | Arnex-sur-Orbe |
| Arnhem | Arnhem |
| Arnis | Eskrima |
| Arno | Arno |
| Arno Breker | Arno Breker |
| Arno Penzias | Arno Allan Penzias |
| Arnold Böcklin | Arnold Böcklin |
| Arnold de Villanova | Arnau de Villanova |
| Arnold Rüütel | Arnold Rüütel |
| Arnold Schwarzenegger | Arnold Schwarzenegger |
| Arnold Schönberg | Arnold Schönberg |
| Arnold Sommerfeld | Arnold Sommerfeld |
| Arnold van Gennep | Arnold van Gennep |
| Arnold z Brescii | Arnaldo de Brescia |
| Arnoldo Iguarán | Arnoldo Iguarán |
| Arnor | Arnor |
| Arnota właściwa | Bixa orellana |
| Arnstadt | Arnstadt |
| Arnulf | Arnulfo de Baviera |
| Arnulf I Wielki | Arnulfo de Baviera |
| Arnulf z Karyntii | Arnulfo de Carintia |
| Arnéguy | Arnéguy |
| arogancja | arrogancia |
| Arogno | Arogno |
| aromaterapia | aromaterapia |
| aromatyczny | aromático |
| Aron | Aarón |
| Aron Nimzowitsch | Aaron Nimzowitsch |
| Arona | Arona |
| Arosa | Arosa |
| Arose | Surgir I |
| Aroue-Ithorots-Olhaïby | Aroue-Ithorots-Olhaïby |
| ARP | Address Resolution Protocol |
| ARP Instruments | ARP |
| ARPA | Arpa |
| Arpheuilles | Arfeuilles |
| Arpu | ARPU |
| Arradon | Arradon |
| Arrakis | Arrakis |
| Arrancourt | Arrancourt |
| Arrancy | Arhansus |
| Arrans | Aranc |
| Arras | Arrás |
| ArraSaint-Larrebieu | Arrast-Larrebieu |
| Arrau | Podocnemis expansa |
| Arraute-Charritte | Arraute-Charritte |
| Arre | Área |
| Arreau | Arro |
| Arrentières | Arrentières |
| Arrhinoceratops | Arrhinoceratops |
| Arro | Arro |
| Arromanches-les-Bains | Arromanches-les-Bains |
| Arrondissement | Arrondissement |
| Arronnes | Arronnes |
| Arroyo Seco | Arroyo Seco |
| Arrènes | Arrènes |
| Ars | Ars |
| Ars antiqua | Ars antiqua |
| Ars longa | Ars longa vita brevis |
| Ars Magica | Ars Magica |
| Ars moriendi | Ars moriendi |
| Ars nova | Ars nova |
| Ars poetica | Epístola a los Pisones |
| arsen | arsénico |
| Arsenal Londyn | Arsenal Football Club |
| Arsenal Sarandi Buenos Aires | Arsenal Fútbol Club |
| Arsenał Kijów | Arsenal Football Club |
| Arsenek | Arseniuro |
| arsenek galu | arseniuro de galio |
| Arsenie Todiraş | Arsenie Todiraş |
| Arsenio Erico | Arsenio Pastor Erico |
| Arseniusz | Arsénico |
| Arsenowy | Arsénico |
| Arses | Arsés |
| Arshile Gorky | Arshile Gorky |
| Arsinoe | Arsínoe |
| Arsinoe I | Arsínoe I |
| Arsinoe II | Arsínoe II |
| Arsinoe III | Arsínoe III |
| Arsinoe IV | Arsínoe IV |
| Arsinoiterium | Arsinoitherium |
| Arsonval | Arsonval |
| Arsène Lupin | Arsenio Lupin |
| Arsène Wenger | Arsène Wenger |
| Art Brut | Arte marginal |
| Art Buchwald | Art Buchwald |
| Art déco | Art decó |
| Art Garfunkel | Art Garfunkel |
| Art Ross Memorial Trophy | Trofeo Art Ross |
| Art Spiegelman | Art Spiegelman |
| Art Tatum | Art Tatum |
| Arta | Arta |
| Artaban IV | Artabán IV |
| Artabasdes | Artabasdo |
| Artafernes | Artafernes |
| Artagnan | Artagnan |
| Artakama | Artacama |
| Artakserkses | Artajerjes |
| Artakserkses I | Artajerjes I |
| Artakserkses II | Artajerjes II |
| Artakserkses III | Artajerjes III Oco |
| Artas | Arta |
| Artaszat | Artashat |
| Artaszes Minasian | Artashes Minasian |
| Arte | Arte |
| artefakt | artefacto |
| Artem Miłewskyj | Artem Milevskiy |
| Artemare | Artemare |
| Artemia | Artemia salina |
| Artemida | Artemisa |
| Artemidor z Efezu | Artemidoro |
| Artemis | Artemisa |
| Artemis Entreri | Artemis Entreri |
| Artemis Fowl | Artemis Fowl |
| Artemisia Gentileschi | Artemisia Gentileschi |
| Artemizja II | Artemisia II de Caria |
| Artemizjon | Templo de Artemisa en Éfeso |
| arteria | arteria |
| Arteterapia | Arteterapia |
| Arthedain | Arthedain |
| Arthon-en-Retz | Laval |
| Arthonnay | Arthonnay |
| Arthur | Arturo de Sajonia-Coburgo-Gotha |
| Arthur Adamov | Arthur Adamov |
| Arthur Axmann | Arthur Axmann |
| Arthur Balfour | Arthur James Balfour |
| Arthur Bliss | Arthur Bliss |
| Arthur Cayley | Arthur Cayley |
| Arthur Conan Doyle | Arthur Conan Doyle |
| Arthur Cronquist | Arthur John Cronquist |
| Arthur de Gobineau | Joseph Arthur de Gobineau |
| Arthur Dion Hanna | Arthur Dion Hanna |
| Arthur Drewry | Arthur Drewry |
| Arthur Evans | Arthur Evans |
| Arthur Friedenreich | Arthur Friedenreich |
| Arthur Griffith | Arthur Griffith |
| Arthur Hailey | Arthur Hailey |
| Arthur Harden | Arthur Harden |
| Arthur Hastings | Arthur Hastings |
| Arthur Henderson | Arthur Henderson |
| Arthur Holly Compton | Arthur Compton |
| Arthur Honegger | Arthur Honegger |
| Arthur Koestler | Arthur Koestler |
| Arthur Kornberg | Arthur Kornberg |
| Arthur Larsen | Arthur Larsen |
| Arthur Leonard Schawlow | Arthur Leonard Schawlow |
