| archétype | arquetipo |
| Arcins | Arsénico |
| Arcizac-Adour | Arcizac-Adour |
| Arcko | Treecko |
| ARCnet | ARCNET |
| Arco | Arco |
| Arcologie | Arcología |
| Arconciel | Arconciel |
| Arconville | Arconville |
| Arcore | Arcore |
| Arctiidae | Arctiidae |
| Arctinos de Milet | Arctino de Mileto |
| Arctique | Ártico |
| Arctocephalinae | Lobo marino |
| Arctocephalus galapagoensis | Arctocephalus galapagoensis |
| Arctocephalus philippii | Arctocephalus philippii |
| Arctotheca | Arctotheca |
| Arctotis | Arctotis |
| Arcturus | Arturo |
| Arcueil | Arcueil |
| Arcésilas | Arcesilao |
| Arcésilas de Pitane | Arcesilao |
| Ard ri Érenn | Gran rey de Irlanda |
| Ardabil | Ardebil |
| Ardachîr Ier | Ardacher I |
| Ardachîr II | Ardacher II |
| Ardahan | Provincia de Ardahan |
| Ardaric | Ardarico |
| Ardea | Ardea |
| Ardea alba | Ardea alba |
| Ardea pacifica | Ardea pacifica |
| Ardea purpurea | Ardea purpurea |
| Ardeidae | Ardeidae |
| Ardelu | Ardelu |
| Ardement | A borbollones |
| Ardennais | Ardenas |
| Ardenne | Ardenas |
| Ardennes | Ardenas |
| Ardennes flamandes | Ardenas flamencas |
| Ardennes françaises | Ardenas |
| ardent | vivo |
| Ardent défenseur | Caballero |
| Ardents | Pasión |
| Ardeola bacchus | Ardeola bacchus |
| ardeur | crueldad |
| Ardez | Ardez |
| Ardhanari | Ardhanari |
| Ardillières | Ardillières |
| Ardipithecus ramidus | Ardipithecus ramidus |
| Ardipithèque | Ardipithecus |
| Ardo | Ardón |
| ardoise | pizarra |
| Ardoise électronique | Computadora portátil |
| ardoiser | empizarrar |
| Ardon | Ardon |
| ardu | duro |
| Arduina | Arduina |
| Ardèche | Ardèche |
| Ardènnes | Ardenas |
| are | área |
| Areal | Área |
| Areatza | Villaro |
| Areca | Areca catechu |
| Arecaceae | Arecaceae |
| Arecales | Arecales |
| Arecibo | Arecibo |
| Arecidae | Arecidae |
| Aredhel | Aredhel |
| Aregno | Aregno |
| Areines | Areines |
| Arellano | Arellano |
| Aren | Aranc |
| Arena | Arena |
| Arena Wetzlar | Rittal-Arena |
| Arenal | Volcán Arenal |
| Arenas Club de Guecho | Arenas Club de Getxo |
| Arenaviridae | Arenavirus |
| Arendal | Arendal |
| Areop-Enap | Areop-Enap |
| Arequipa | Arequipa |
| Ares | Ares |
| Ares del Maestrat | Ares del Maestre |
| Ares I | Ares |
| Aretha Franklin | Aretha Franklin |
| Arethusa bulbosa | Arethusa |
| Arette | Arette |
| Aretxabaleta | Arechavaleta |
| Arezzo | Arezzo |
| Areópoli | Amiclas |
| Arfeuille-Châtain | Arfeuille-Châtain |
| Arfeuilles | Arfeuilles |
| Arg-é Bam | Arg-é Bam |
| Arga | Río Arga |
| Argeliers | Argeliers |
| Argelliers | Argeliers |
| Argelès-Gazost | Argelès-Gazost |
| Argelès-sur-Mer | Argelès-sur-Mer |
| Argens-Minervois | Argens-Minervois |
| argent | pasta |
| argent de poche | dinero de bolsillo |
| argent du ménage | dinero para gastos domésticos |
| argent en barres | barras de plata |
| argent liquide | efectivo |
