| armékår | Armeekorps |
| ARN | Arn |
| Arnaut Danièl | Arnaut Daniel |
| Arne Anka | Arne Anka |
| Arne Friedrich | Arne Friedrich |
| Arne Selmosson | Arne Selmonsson |
| Arne Tiselius | Arne Wilhelm Kaurin Tiselius |
| Arnex-sur-Nyon | Arnex-sur-Nyon VD |
| Arnex-sur-Orbe | Arnex-sur-Orbe VD |
| Arngrímur Jónsson | Arngrímur Jónsson |
| Arnhem | Arnheim |
| Arnhem land | Arnhemland |
| Arni | Arni AG |
| arnika | Arnika |
| arnikasläktet | Arnika |
| Arno | Arno |
| Arno Breker | Arno Breker |
| Arno Holz | Arno Holz |
| Arno Penzias | Arno Penzias |
| Arnobius | Arnobius der Ältere |
| Arnold | Arnold |
| Arnold Böcklin | Arnold Böcklin |
| Arnold de Cervole | Arnaud de Cervole |
| Arnold GmbH | Arnold |
| Arnold Mærsk Mc-Kinney Møller | Mærsk Mc-Kinney Møller |
| Arnold Rüütel | Arnold Rüütel |
| Arnold Schwarzenegger | Arnold Schwarzenegger |
| Arnold Schönberg | Arnold Schönberg |
| Arnolfo di Cambio | Arnolfo di Cambio |
| Arnstadt | Arnstadt |
| Arnulf | Arnulf |
| Arnulf av Kärnten | Arnulf von Kärnten |
| Arnulf av Metz | Arnulf von Metz |
| Arogno | Arogno TI |
| arom | Aroma |
| aromatisk | aromatisch |
| aromatisk förening | aromatische Verbindung |
| Aromatiska kolväten | Aromaten |
| aromatiskt kolväte | aromatischer Kohlenwasserstoff |
| aromatiskt ämne | Geruchsstoff |
| aromterapi | Aromatherapie |
| Aron | Aaron |
| Arona | Arona |
| Aronior | Apfelbeeren |
| Aroostook County | Aroostook County |
| Aror | Eigentliche Aras |
| Arosa | Arosa GR |
| Arosvallen | Arosvallen |
| Arouquesa | Arouquesa |
| ARP | Address Resolution Protocol |
| ARP Instruments | ARP Instruments |
| ARPA | ARPA |
| Arpad Elo | Arpad Elo |
| ARPANET | Arpanet |
| arpeggio | Arpeggio |
| arpeggione | Arpeggione |
| arrak | Arrak |
| Arrakis - ökenplaneten | Dune |
| Arran Distillery | Arran |
| Arrane Ashoonagh Dy Vannin | Arrane Ashoonagh dy Vannin |
| arrangemang | Anordnung |
| arrangera | arrangieren |
| arrangera om | umordnen |
| Arrangering | Arrangement |
| Arras | Arras |
| Array | Array |
| Arrecife | Arrecife |
| arrendator | Mieter |
