| Adelberg | Adelberg |
| Adelbert von Chamisso | Ludolf Karl Adelbert von Chamisso |
| Adele language | Adela |
| Adelebsen | Adelebsen |
| Adelina Patti | Adelina Patti |
| Adelmannsfelden | Adelmannsfelden |
| Adelschlag | Adelschlag |
| Adelsdorf | Adelsdorf |
| Adelsheim | Adelsheim |
| Adelsried | Adelsried |
| Adelzhausen | Adelzhausen |
| Ademir Marques de Menezes | Ademir Marques de Menezes |
| Aden | Aden |
| Aden Abdullah Osman Daar | Aden Abdullah Osman Daar |
| Aden Adde International Airport | Port lotniczy Mogadiszu |
| ADEN cannon | Działko ADEN |
| Aden Protectorate | Protektorat Adeński |
| Adena culture | Kultura Adena |
| Adenau | Adenau |
| adenine | adenina |
| Adenium | Róża pustyni |
| adenoids | adenoid |
| Adenosine diphosphate | Adenozynodifosforan |
| Adenosine triphosphate | ATP |
| Adenoviridae | Adenowirusy |
| Adenylate cyclase | Cyklaza adenylowa |
| Adephaga | Chrząszcze drapieżne |
| adept | ekspert |
| adequacy | adekwatność |
| adequate | stosowny |
| adequate food supply | dostateczne zaopatrzenie w artykuły żywnościowe |
| adequately | właściwie |
| adequateness | adekwatność |
| Ader Éole | Eol |
| Adeste Fideles | Adeste Fideles |
| Adewale Akinnuoye-Agbaje | Adewale Akinnuoye-Agbaje |
| ADGZ | ADGZ |
| Adhemar da Silva | Adhemar Ferreira da Silva |
| Adhemar of Le Puy | Ademar z Monteil |
| adhere | wspierać |
| adherent | członek |
| adhesive | lepki |
| adhesive bandage | plaster |
| Adhémar Jean Claude Barré de Saint-Venant | Adhémar Jean de Saint-Venant |
| Adi Shamir | Adi Shamir |
| Adi Shankara | Adi Śankara |
| Adi-Buddha | Adi-budda |
| Adiabatic process | Przemiana adiabatyczna |
| Adiabene | Adiabene |
| Adiantum | Adiantum |
| Adiaphora | Adiafora |
| Adidas Fevernova | Fevernova |
| Adidas Teamgeist | Teamgeist |
| adieu | do widzenia |
| Adige | Adyga |
| Adil Giray | Adil Girej |
| Adil Shahi | Bidźapur |
| Adinfer | Adinfer |
| adipic | tłuszczowy |
| adipocyte | adipocyt |
| adipose | tłuszczowy |
| adipose tissue | tkanka tłuszczowa |
| Adiposis dolorosa | Choroba Dercuma |
| adiposity | otyłość |
| Adirondack Red Wings | Adirondack Red Wings |
| Adisumarmo International Airport | Port lotniczy Surakarta-Adisumarmo |
| Aditi | Aditi |
