| Albuquerque | Albuquerque |
| Alburquerque | Albuquerque |
| Albus Dumbledore | Albus Dumbledore |
| Albussac | Albussac |
| Albé | Albé |
| Alcaeus | Alkajos |
| Alcalde | Burmistrz |
| Alcalá de Henares | Alcalá de Henares |
| Alcamo | Alcamo |
| Alcantara | Alcantara |
| Alcara li Fusi | Alcara li Fusi |
| Alcatel | Alcatel |
| Alcatraz Island | Alcatraz |
| Alcea rosea | Prawoślaz różowy |
| Alcedinidae | Zimorodkowate |
| Alcelaphinae | Alcelaphinae |
| Alceste | Alkestis |
| Alcestis | Alkestis |
| alchemical | alchemiczny |
| alchemist | alchemik |
| alchemy | alchemia |
| Alchevsk | Alczewsk |
| Alcibiades | Alkibiades |
| Alcide De Gasperi | Alcide De Gasperi |
| Alcides Ghiggia | Alcides Ghiggia |
| Alcids | Siewkowe |
| Alcimede | Polimele |
| Alcinous | Alkinoos |
| Alcmaeonidae | Alkmeonidzi |
| Alcmene | Alkmena |
| Alcock and Brown | Przelot Alcocka i Browna przez Atlantyk |
| alcohol | alkohol |
| Alcohol dehydrogenase | Dehydrogenaza alkoholowa |
| alcohol-free | bezalkoholowy |
| alcoholic | alkoholowy |
| Alcoholic beverage | Napój alkoholowy |
| Alcoholics Anonymous | Anonimowi Alkoholicy |
| alcoholism | alkoholizm |
| Alcor | Alkor |
| Alcor Life Extension Foundation | Alcor |
| Alcor Zeta Bado | Alkor |
| alcove | alkowa |
| Alcuin | Alkuin |
| Alcyonaria | Koralowce ośmiopromienne |
| Alcyone | Alkyone |
| Alcyoneus | Alkyoneus |
| Alcázar | Alkazar |
| Alcázar of Seville | Alkazar |
| Alcázar of Toledo | Alkazar |
| Aldabra | Aldabra |
| Aldabra Giant Tortoise | Żółw olbrzymi |
| Aldair | Aldair |
| Aldamir | Aldamir |
| Aldan Airport | Ałdan |
| Aldan River | Ałdan |
| Aldebaran | Aldebaran |
| Aldege Baz Bastien Memorial Award | Aldege Baz Bastien Memorial Award |
| aldehyde | aldehyd |
| Aldein | Aldino |
| alder | olcha |
| Alderaan | Alderaan |
| Alderney | Alderney |
| Aldersbach | Aldersbach |
| Aldfrith of Northumbria | Aldfrith |
| Aldingen | Aldingen |
| Aldo Moro | Aldo Moro |
| Aldo Olivieri | Aldo Olivieri |
| Aldo van Eyck | Aldo van Eyck |
| Aldol reaction | Kondensacja aldolowa |
| Aldolase A | Aldolazy |
