| Armia Krajowa | Polnische Heimatarmee |
| Armia Kwantuńska | Guandong-Armee |
| Armia Ludowa | Armia Ludowa |
| Armia Polska we Francji | Blaue Armee |
| Armia Potomacu | Army of the Potomac |
| Armia Południowego Libanu | Südlibanesische Armee |
| Armia Północnej Wirginii | Army of Northern Virginia |
| Armia rzymska | Römische Legion |
| Armia Stanów Zjednoczonych | United States Army |
| Armia Zbawienia | Heilsarmee |
| Armida | Armida |
| Armidale | Armidale |
| Armin | Armin |
| Armin Hary | Armin Hary |
| Armin Meiwes | Armin Meiwes |
| Armin van Buuren | Armin van Buuren |
| Armin Zöggeler | Armin Zöggeler |
| Arminia Bielefeld | Arminia Bielefeld |
| Arminianizm | Remonstranten |
| Arminius | Arminius |
| Arminiusz | Arminius |
| armistycjum | Waffenstillstand |
| Armix | Armix |
| Armoryka | Aremorica |
| Armoy | Armoy |
| Armstrong | Armstrong |
| Armstrong Whitworth Whitley | Armstrong Whitworth Whitley |
| Armwrestling | Armdrücken |
| Arnaldo Forlani | Arnaldo Forlani |
| Arnaldo Tamayo Méndez | Arnaldo Tamayo Méndez |
| Arnaud Amaury | Arnaldus Amalric |
| Arnaville | Arnaville |
| Arnayon | Arnayon |
| Arnbruck | Arnbruck |
| Arne Friedrich | Arne Friedrich |
| Arne Wilhelm Kaurin Tiselius | Arne Wilhelm Kaurin Tiselius |
| Arneb | Arneb |
| Arnex-sur-Nyon | Arnex-sur-Nyon VD |
| Arnex-sur-Orbe | Arnex-sur-Orbe VD |
| Arnhem | Arnheim |
| arnika | Arnika |
| arnika górska | Arnika |
| Arnis | Eskrima |
| Arno | Arno |
| Arno Arthur Wachmann | Arthur Arno Wachmann |
| Arno Breker | Arno Breker |
| Arno Holz | Arno Holz |
| Arno Penzias | Arno Penzias |
| Arnold | Arnold |
| Arnold Böcklin | Arnold Böcklin |
| Arnold de Villanova | Arnaldus de Villanova |
| Arnold Geulincx | Arnold Geulincx |
| Arnold Koller | Arnold Koller |
| Arnold Rüütel | Arnold Rüütel |
| Arnold Schwarzenegger | Arnold Schwarzenegger |
| Arnold Schönberg | Arnold Schönberg |
| Arnold Sommerfeld | Arnold Sommerfeld |
| Arnold van Gennep | Arnold van Gennep |
| Arnold Winkelried | Arnold Winkelried |
| Arnold z Brescii | Arnold von Brescia |
| Arnoszt z Pardubic | Ernst von Pardubitz |
| Arnota właściwa | Annattostrauch |
| Arnotowate | Annattogewächse |
| Arnouville-lès-Gonesse | Arnouville-lès-Gonesse |
| Arnprior | Arnprior |
| Arnsberg | Arnsberg |
| Arnschwang | Arnschwang |
| Arnstadt | Arnstadt |
| Arnstein | Arnstein |
| Arnstorf | Arnstorf |
| Arnulf z Karyntii | Arnulf von Kärnten |
| Arnulf z Metzu | Arnulf von Metz |
| Arné | Arne |
| Aro | ARO |
| arogancja | Arroganz |
| arogancki | anmaßend |
| Arogno | Arogno TI |
| aromat | Aroma |
| Aromataza | Aromatase |
| aromaterapia | Aromatherapie |
| aromatyczny | aromatisch |
| Aron | Aaron |
| Aron ha-kodesz | Toraschrein |
| Aron Nimzowitsch | Aaron Nimzowitsch |
| Arona | Arona |
| aronia | Apfelbeere |
| AROS Research Operating System | AROS |
| Arosa | Arosa GR |
| ARP | Address Resolution Protocol |
| ARP Instruments | ARP Instruments |
| ARP Spoofing | ARP-Spoofing |
| ARPA | ARPA |
| Arpavon | Arpavon |
| Arpeggio | Arpeggio |
| Arpu | Average Revenue per User |
| Arques | Les Arcs |
| Arrach | Arrach |
| Arraincourt | Arraincourt |
| Arrakis | Alrakis |
| Arran | Isle of Arran |
| Arrane Ashoonagh dy Vannin | Arrane Ashoonagh dy Vannin |
| Arrans | Aranc |
| Arras | Arras |
| Arre | Ar |
| Arrecife | Arrecife |
| Arrest | Haft |
| Arreux | Arès |
| Arria | Arria die Ältere |
| Arriance | Arriance |
| Arrondissement | Arrondissement |
| Arronnes | Aaron |
| Arrows | Arrows |
| Arry | Arry |
| Ars | Ars |
| Ars antiqua | Ars antiqua |
| Ars Electronica | Ars Electronica |
| Ars Magica | Ars Magica |
| Ars moriendi | Ars moriendi |
| Ars nova | Ars nova |
| Ars poetica | Ars Poetica |
| Ars-en-Ré | Ars-en-Ré |
| Ars-Laquenexy | Ars-Laquenexy |
| Ars-sur-Formans | Ars-sur-Formans |
| Ars-sur-Moselle | Ars-sur-Moselle |
| arsen | Arsen |
| Arsenal Londyn | FC Arsenal |
| Arsenal Sarandi Buenos Aires | Arsenal de Sarandí |
| arsenał | Arsenal |
