| arcaded | decorado con arcos |
| Arcadi Gaydamak | Arkady Gaidamak |
| Arcadi Volodos | Arcadi Volodos |
| Arcadia | Arcadia |
| Arcadius | Arcadio |
| Arcadocypriot Greek | Arcado-chipriota |
| Arcady | Arcadia |
| Arcangelo Corelli | Arcangelo Corelli |
| Arcangues | Arcangues |
| Arcelor Mittal | Arcelor Mittal |
| Arceniega | Arceniega |
| Arcesilaus | Arcesilao |
| Arcesius | Arcisio |
| arch | picaresco |
| Arch Linux | Arch Linux |
| Arch of Constantine | Arco de Constantino |
| Arch of Janus | Arco de Jano |
| Arch of Septimius Severus | Arco de Severo Séptimo |
| Arch of Titus | Arco de Tito |
| Arch of Triumph | Arco de triunfo |
| arch support | plantilla ortopédica |
| Archaea | Archaea |
| Archaeoastronomy | Arqueoastronomía |
| Archaeobatrachia | Archaeobatrachia |
| Archaeoceratops | Archaeoceratops |
| Archaeoceti | Archaeoceti |
| Archaeocyatha | Archaeocyatha |
| Archaeogastropoda | Archaeogastropoda |
| archaeological | arqueológico |
| Archaeological culture | Cultura |
| Archaeological industry | Industria |
| archaeological site | zona arqueológica |
| Archaeological theory | Historia y teoría de la Arqueología |
| archaeologist | arqueólogo |
| archaeology | arqueología |
| Archaeology and the Book of Mormon | Arqueología y el Libro de Mormón |
| Archaeology of Israel | Arqueología de Israel |
| Archaeology of the Americas | Prehistoria de América |
| Archaeopteryx | Archaeopteryx |
| Archaeornithomimus | Archaeornithomimus |
| Archaeothyris | Archaeothyris |
| Archaeplastida | Primoplantae |
| archaic | antiguo |
| Archaic Period | Período arcaico |
| Archaic period in Greece | Época Arcaica |
| Archaic period in the Americas | Periodo arcaico de América |
| archaism | arcaísmo |
| archangel | arcángel |
| Archangel class assault ship | Archangel |
| archbishop | arzobispo |
| Archbishop of Armagh | Arzobispo de Armagh |
| Archbishop of Canterbury | Arzobispo de Canterbury |
| Archbishop of Cologne | Arzobispado de Colonia |
| Archbishop of Westminster | Arquidiócesis de Westminster |
| archbishopric | arquidiócesis |
