| argumenteren met | reason with |
| argumenteren tegen | argue against |
| argumenteren voor | argue for |
| Argumentum ad baculum | Argumentum ad baculum |
| Argumentum ad hominem | Ad hominem |
| Argumentum ad misericordiam | Appeal to pity |
| Argumentum ad populum | Argumentum ad populum |
| Argus | Argus |
| Argus Panoptes | Argus |
| Argusfazant | Great Argus |
| Argusvissen | Scatophagidae |
| Argusvlinder | Satyr |
| argwaan | distrust |
| argwaan koesteren tegenover | mistrust |
| argwanend | distrustful |
| Argy | Argis |
| Argyll and Bute | Argyll and Bute |
| Argyrie | Argyria |
| Arhansus | Arhansus |
| Arholzen | Arholzen |
| Ari Vatanen | Ari Vatanen |
| aria | aria |
| Aria Air | Aria Air |
| Aria Giovanni | Aria Giovanni |
| Ariadne | Ariadne |
| Ariane | Ariadne |
| Ariane der Nederlanden | Princess Ariane of the Netherlands |
| Arianisme | Arianism |
| Arianna | Ariana |
| Ariano Irpino | Ariano Irpino |
| Arianrhod | Arianrhod |
| Ariary | Malagasy ariary |
| Arica y Parinacota | Arica and Parinacota Region |
| Ariclenes da Silva Ferreira | Ariclenes da Silva Ferreira |
| Ariel Ortega | Ariel Ortega |
| Ariel Ramírez | Ariel Ramírez |
| Ariel Sharon | Ariel Sharon |
| Ariel Zeevi | Ariel Zeevi |
| Arien | Arien |
| Aries | Aries |
| Arieş | Arieş River |
| Arik Einstein | Arik Einstein |
| Arik-den-ili | Arik-den-ili |
| Arild | Arild |
| Arinna | Arinna |
| Arion | Arion |
| Ariosofie | Nazi occultism |
| Ariovald | Arioald |
| Ariovistus | Ariovistus |
| Aripiprazol | Aripiprazole |
| Ariq Boke | Ariq Böke |
| Aris Bonnevoie | FC Aris Bonnevoie |
| Aris Saloniki | Aris FC |
| Arisch | Aryan |
| Arische | Aryan |
| Arische invasietheorie | Indo-Aryan migration |
| Arische ras | Aryans |
| Arisdorf | Arisdorf |
| Aristaeus | Aristaeus |
| Aristagoras | Aristagoras |
| Aristarchus | Aristarchus of Samos |
| Aristau | Aristau |
| Aristeas | Aristeas |
| Aristide Briand | Aristide Briand |
| Aristide Cavaillé-Coll | Aristide Cavaillé-Coll |
| Aristide Maillol | Aristide Maillol |
| Aristides | Aristides |
| Aristidis Konstantinidis | Aristidis Konstantinidis |
| Aristippos van Cyrene | Aristippus |
| Aristobulus | Aristobulus |
| Aristobulus I | Aristobulus |
| Aristobulus II | Aristobulus II |
| Aristobulus III | Aristobulus III of Judea |
