| arc-en-ciel | rainbow |
| Arca | ARCA |
| Arcachon | Arcachon |
| arcade | arcade |
| Arcade Fire | Arcade Fire |
| Arcadi et Boris Strougatski | Arkady and Boris Strugatsky |
| Arcadi Gaydamak | Arcadi Gaydamak |
| Arcadi Volodos | Arcadi Volodos |
| Arcadia | Arcadia |
| Arcadie | Arcadia |
| Arcadius | Arcadius |
| Arcambal | Arcambal |
| Arcangelo Corelli | Arcangelo Corelli |
| Arcangues | Arcangues |
| Arcas | Arcas |
| Arce-Artzi | Arce - Artzi |
| arceau à vélo | bicycle stand |
| ArcelorMittal | Arcelor Mittal |
| Arceuil | Arceuil |
| Arch Linux | Arch Linux |
| Archaea | Archaea |
| Archaeobatrachia | Archaeobatrachia |
| Archaeogastropoda | Archaeogastropoda |
| Archaeopteryx | Archaeopteryx |
| Archaeornithomimus | Archaeornithomimus |
| Archaeplastida | Archaeplastida |
| archange | archangel |
| archaïque | ancient |
| archaïsme | archaism |
| Arche coronale | Coronal loops |
| Arche d'alliance | Ark of the Covenant |
| Arche de la Défense | Grande Arche |
| Archelon | Archelon |
| Archeoastronomie | Archaeoastronomy |
| Archeologie | Archaeology |
| archer | archer |
| Archer John Porter Martin | Archer John Porter Martin |
| Archer à cheval | Horse archer |
| Archestratos | Archestratus |
| archet | fiddlestick |
