| Allier | Allier |
| Allier River | Río Allier |
| Allies | fuerzas aliadas |
| Allies of World War I | Triple Entente |
| Allies of World War II | Aliados de la Segunda Guerra Mundial |
| Allies on World War I | Triple Entente |
| alligator | caimán |
| alligator pear | abogado |
| Alligatoridae | Alligatoridae |
| Allison DuBois | Allison DuBois |
| alliteration | aliteración |
| alliterative | aliterado |
| Allium | Allium |
| Allium roseum | Allium roseum |
| Allium sphaerocephalon | Allium sphaerocephalon |
| Allmendingen bei Bern | Allmendingen bei Bern |
| Allmänna Idrottsklubben | AIK Fotboll |
| allo- | alo- |
| Allocasuarina | Allocasuarina |
| allocate | repartir |
| allocation | asignación |
| allocation plan | plan de adjudicación |
| allochthonous | alóctono |
| allodium | alodio |
| allogamy | alogamia |
| Allogenes | Alógenes |
| Allopatric speciation | Especiación alopátrida |
| allophone | alófono |
| Allosaurid | Allosauridae |
| Allosauroidea | Allosauroidea |
| Allosaurus | Allosaurus |
| allose | alosa |
| Allosteric regulation | Regulación alostérica |
| allot | repartir |
| allotment | asignación |
| allotrope | alótropo |
| allotropic | alotrópico |
| allotropy | alotropía |
| allow | dejar |
| allow access to | dar entrada a |
| allow oneself to | permitirse |
| allowable | admisible |
| allowance | compensación |
| allowed | aprobado |
| alloy | aleación |
| alloyed | aleado |
| allspice | pimienta inglesa |
| Allsvenskan | Allsvenskan |
| allude | referirse |
| allude to | aludir a |
| allure | atractivo |
| alluring | atractivo |
| allusion | alusión |
| allusive | alusivo |
| alluvial | aluvial |
| alluvial fan | abanico aluvial |
| alluvial plain | llanura aluvial |
| alluvion | aluvión |
| alluvium | aluvión |
| Allvar Gullstrand | Allvar Gullstrand |
| ally | aliado |
| Ally by marriage | Emparentarse |
| Ally McBeal | Ally McBeal |
| Ally oneself with | Allier |
| ally with | aliarse con |
| allyl | alilo |
| allylic | alílico |
| Allègre-les-Fumades | Allègre-les-Fumades |
| Alma | Alma |
