| acétone | aceton |
| Acétonitrile | Acetonitril |
| Acétyl-coA | Acetyl-CoA |
| Acétyl-coenzyme A | Acetyl-CoA |
| acétylcholine | acetylcholine |
| acétylène | acetyleen |
| AD | AD |
| ad hoc | ad hoc |
| Ad hominem | Argumentum ad hominem |
| Ad maiorem Dei gloriam | Ad Majorem Dei Gloriam |
| ad nauseam | ad nauseam |
| Ad-Aware | Ad-aware |
| Ada | Ada |
| Ada Air | Ada Air |
| Ada de Carie | Ada |
| Ada de Hollande | Ada van Holland |
| Ada Lovelace | Ada Lovelace |
| ADAC | ADAC |
| Adad | Adad |
| Adad-Idri | Hadadezer |
| Adad-nerari Ier | Adad-nirari I |
| Adad-Nerari III | Adad-Nirari III |
| Adad-Nirari II | Adad-nirari II |
| adage | aforisme |
| adagio | adagio |
| Adagio pour cordes | Adagio for Strings |
| Adaincourt | Adaincourt |
| Adainville | Adainville |
| Adalbert | Adalbert van Lotharingen |
| Adalbert de Lorraine | Adalbert van Lotharingen |
| Adalbert de Prague | Adalbert van Praag |
| Adalbéron de Reims | Adalbero van Reims |
| Adalia | Antalya |
| Adaloald | Adoald van de Langobarden |
| Adam | Adam |
| Adam Chmielowski | Albert Chmielowski |
| Adam Clayton | Adam Clayton |
| Adam Copeland | Adam Copeland |
| Adam de Brême | Adam van Bremen |
| Adam de la Halle | Adam de la Halle |
| Adam Elsheimer | Adam Elsheimer |
| Adam et Ève | Adam en Eva |
| Adam Jerzy Czartoryski | Adam Jerzy Czartoryski |
| Adam Levine | Adam Levine |
| Adam Małysz | Adam Małysz |
| Adam Mickiewicz | Adam Mickiewicz |
| Adam Nelson | Adam Nelson |
| Adam Sandler | Adam Sandler |
| Adam Smith | Adam Smith |
| Adam Weishaupt | Adam Weishaupt |
| Adam-lès-Passavant | Adam-lès-Passavant |
| Adam-lès-Vercel | Adam-lès-Vercel |
| Adamantisaurus | Adamantisaurus |
| Adamantium | Adamantium |
| Adamaoua | Adamawa |
| Adamawa | Adamawa |
| Adamello-Presanella | Adamello |
| Adamien | Adamiet |
| Adamite | Adamiet |
| Adams | Adams |
| Adamstown | Adamstown |
| Adamswiller | Adamswiller |
| Adamántios Koraïs | Adamantios Koraïs |
| Adana | Adana |
| Adana Demirspor K | Adana Demirspor |
| Adanaspor AS SK | Adanaspor |
| Adapazarı | Adapazarı |
| adaptabilité | aanpassingsvermogen |
| adaptable | adaptief |
| adaptateur | adapter |
| adaptateur graphique | grafische kaart |
| adaptation | aanpassing |
