| Alva Myrdal | Alva Myrdal |
| Alvan Graham Clark | Alvan Graham Clark |
| Alvaneu | Alvaneu |
| Alvar Aalto | Alvar Aalto |
| Alvarezsaurus | Alvarezsaurus |
| Alvaro Pierri | Álvaro Pierri |
| Alvaschein | Alvaschein |
| alveo | riverbed |
| alveolar | alveolar |
| alveolitis seca | dry socket |
| alveolo | air sac |
| Alveolo pulmonar | Pulmonary alveolus |
| Alvesta | Alvesta Municipality |
| Alvin Toffler | Alvin Toffler |
| alvéolo | alveolus |
| alvéolo pulmonar | air sac |
| Alvíss | Alvíss |
| Alvíssmál | Alvíssmál |
| Alwalkeria | Alwalkeria |
| Alxasaurus | Alxasaurus |
| Alyn Sytoe Jata | Aline Sitoe Diatta |
| Alyson Hannigan | Alyson Hannigan |
| Alyssa Milano | Alyssa Milano |
| Alyx Vance | Alyx Vance |
| alza | raise |
| alzacuellos | dog collar |
| alzado | elevation |
| Alzaga | Altzaga |
| alzamiento | lift |
| Alzamiento de mayo en Dresde | May Uprising in Dresden |
| Alzamiento de Pascua | Easter Rising |
| Alzamiento de Varsovia | Warsaw Uprising |
| Alzando la Bandera en Iwo Jima | Raising the Flag on Iwo Jima |
| alzar | pick up |
| alzar el dedo | give the finger |
| alzarse con | engross |
| Alzateaceae | Alzatea |
| alzaválvulas | tappet |
| Alzey | Alzey |
| alzheimer | Alzheimer's disease |
| Alzista | Bull |
| Alzonne | Alzon |
| Alá | Allah |
| Alçay-Alçabéhéty-Sunharette | Alçay-Alçabéhéty-Sunharette |
| Alès | Alès |
| Alénya | Alénya |
| alérgeno | allergen |
| alérgico | allergic |
| Aléria | Aléria |
| Alí Babá | Ali Baba |
| Alí ben Umar | Ali ibn Umar |
| Alí Jamenei | Ali Khamenei |
| Alí Larijani | Ali Larijani |
| Alí Primera | Alí Primera |
| Alí Rodríguez Araque | Alí Rodríguez Araque |
| alícuota | aliquot |
| alílico | allylic |
| aló | hello |
| Alóadas | Aloadae |
| alóctono | allochthonous |
| alófono | allophone |
| Alógenes | Allogenes |
| alótropo | allotrope |
| alúmina | alumina |
| Alû | Alû |
| Alþingi | Althing |
| Am | AM |
| Am Ejad | One Nation |
| Am Timan | Am Timan |
| ama | mistress |
| ama de casa | housekeeper |
| ama de llaves | housekeeper |
| Ama no Uzume | Ama-no-Uzume |
| ama o | skill |
| amabilidad | amiability |
| amable | nice |
| amablemente | amiably |
| Amadeo Bordiga | Amadeo Bordiga |
| Amadeo I de España | Amadeo I of Spain |
| Amadeo II de Saboya | Amadeus II of Savoy |
| Amadeo III de Saboya | Amadeus III of Savoy |
| Amadeo IV de Saboya | Amadeus IV of Savoy |
| Amadeus | Amadeus |
