| arcaismo | arcaísmo |
| arcangelo | arcángel |
| Arcangelo Corelli | Arcangelo Corelli |
| Arcangelo Gabriele | Arcángel Gabriel |
| Arcangelo Michele | Arcángel Miguel |
| Arcangelo Raffaele | Arcángel Rafael |
| Arcangues | Arcangues |
| arcata | arcada |
| arcato | arqueado |
| Arcelor Mittal | Arcelor Mittal |
| Arcesilao | Arcesilao |
| Arceus | Arceus |
| Arcey | Arçay |
| Arch | Arch |
| Arch Linux | Arch Linux |
| Archaea | Archaea |
| Archaeoceti | Archaeoceti |
| Archaeocyatha | Archaeocyatha |
| Archaeopteryx lithographica | Archaeopteryx |
| Archaeothyris florensis | Archaeothyris |
| Archaeplastida | Primoplantae |
| Archangelo Haniele | Arcángel Haniel |
| Arche | Arjé |
| Archeano | Eón Arcaico |
| Archelon ischyros | Archelon |
| Archen | Archenland |
| Archeoastronomia | Arqueoastronomía |
| archeologa | arqueóloga |
| archeologia | arqueología |
| Archeologia biblica | Arqueología bíblica |
| Archeologia industriale | Arqueología industrial |
| Archeologia medievale | Arqueología Medieval |
| archeologico | arqueológico |
| archeologo | arqueólogo |
| Archeología | Arqueología |
| Archeosofia | Arqueosofía |
| Archer John Porter Martin | Archer John Porter Martin |
| archetipo | arquetipo |
| archetto | arco |
| Archi aurorali | Arco auroral |
| Archi luminosi | Arco luminoso |
| Archibald Hahn | Archie Hahn |
| Archibald Philip Primrose | Archibald Primrose |
| Archibald Vivian Hill | Archibald Vivian Hill |
| Archibald Wavell | Archibald Wavell |
| archibugio | trabuco |
| Archidamo II | Arquídamo II |
| Archidamo III | Arquídamo III |
| Archie | Archie |
| archiepiscopale | arzobispal |
| Archiloco | Arquíloco |
| Archimandrita | Archimandrita |
| Archimede | Arquímedes |
| Archimede Pitagorico | Giro Sintornillos |
| Archimedes | Arquímedes |
| Archita | Arquitas |
| architetta | arquitecta |
| architettare | fabricar |
| architetto | arquitecto |
