| Acute disseminated encephalomyelitis | Acute gedissemineerde encefalomyelitis |
| Acute pancreatitis | Pancreatitis |
| Acute phase protein | Acutefase-eiwit |
| Acute renal failure | Nierfalen |
| Acute respiratory distress syndrome | ARDS |
| Acute stress reaction | Acute stress-stoornis |
| acute-angled | met een scherpe hoek |
| acuteness | schranderheid |
| Acy-Romance | Acy-Romance |
| acyclic | acyclisch |
| Acyl chloride | Zuurchloride |
| ad | advertentie |
| AD Alcorcón | AD Alcorcón |
| AD Ceuta | AD Ceuta |
| ad hoc | ad hoc |
| Ad hominem | Argumentum ad hominem |
| ad infinitum | ad infinitum |
| ad lib | ad libitum |
| Ad maiorem Dei gloriam | Ad Majorem Dei Gloriam |
| ad nauseam | tot walgens toe |
| Ad-Aware | Ad-aware |
| Ad-Dukhan | Soera De Rook |
| ad-lib | improvisatie |
| Ad-supported computer software | Adware |
| Ada | Ada |
| Ada Air | Ada Air |
| Ada Lovelace | Ada Lovelace |
| Ada Negri | Ada Negri |
| Ada of Caria | Ada |
| Adab | Adab |
| ADAC | ADAC |
| Adad | Adad |
| Adad-nirari I | Adad-nirari I |
| Adad-nirari II | Adad-nirari II |
| Adad-nirari III | Adad-Nirari III |
| adage | spreekwoord |
| adagio | adagio |
| Adagio for Strings | Adagio for Strings |
| Adair County | Adair County |
| Adaja | Adaja |
| Adalbero of Styria | Adelbero van Stiermarken |
| Adalbert of Prague | Adalbert van Praag |
| Adalbert of Prussia | Adalbert van Oostenrijk |
| Adalbold II of Utrecht | Adelbold II |
| Adaloald | Adoald van de Langobarden |
| Adam | Adam |
| Adam and Eve | Adam en Eva |
| Adam Clayton | Adam Clayton |
| Adam Copeland | Adam Copeland |
| Adam Darski | Nergal |
| Adam de la Halle | Adam de la Halle |
| Adam Elsheimer | Adam Elsheimer |
| Adam Gottlob Oehlenschläger | Adam Oehlenschläger |
| Adam Jerzy Czartoryski | Adam Jerzy Czartoryski |
| Adam Johann von Krusenstern | Adam Johann von Krusenstern |
| Adam Levine | Adam Levine |
| Adam Małysz | Adam Małysz |
| Adam Mickiewicz | Adam Mickiewicz |
| Adam Nelson | Adam Nelson |
| Adam of Bremen | Adam van Bremen |
| Adam Opel | Adam Opel |
| Adam Sandler | Adam Sandler |
| Adam Savage | Adam Savage |
| Adam Smith | Adam Smith |
| Adam Weishaupt | Adam Weishaupt |
| Adam's apple | adamsappel |
| adamant | onbuigzaam |
| Adamantios Korais | Adamantios Koraïs |
| Adamantisaurus | Adamantisaurus |
| Adamawa | Adamawa |
| Adamawa Emirate | Adamawa |
| Adamawa Plateau | Adamawa |
| Adamawa Province | Adamawa |
| Adamawa State | Adamawa |
| Adamclisi | Adamclisi |
| Adamello-Presanella | Adamello |
| Adamite | Adamiet |
| Adamov | Adamov |
| Adams | Adams |
| Adams County | Adams County |
| Adams-Onís Treaty | Adams-Onísverdrag |
| Adamswiller | Adamswiller |
| Adana | Adana |
| Adana Demirspor | Adana Demirspor |
| Adana Province | Adana |
| Adana Şakirpaşa Airport | Luchthaven Sakirpasa |
| Adanaspor | Adanaspor |
| Adansonia digitata | Afrikaanse baobab |
| Adansonia gregorii | Australische baobab |
| Adapa | Adapa |
| Adapatative radiation | Adaptieve radiatie |
| Adapazarı | Adapazarı |
| adapt | zich aanpassen |
