| acuut | acuto |
| acuut reuma | febbre reumatica |
| Acy | Acy |
| Acy-en-Multien | Acy-en-Multien |
| Acy-Romance | Acy-Romance |
| acyclisch | aciclico |
| AD | AD |
| ad hoc | ad hoc |
| ad infinitum | all'infinito |
| Ad interim | Intervallo |
| ad libitum | a piacere |
| Ad Majorem Dei Gloriam | Ad maiorem Dei gloriam |
| ad nauseam | ad oltranza |
| Ad van den Berg | Adrian Vandenberg |
| Ad-aware | Ad-Aware |
| Ada | Ada |
| Ada County | Contea di Ada |
| Ada Lovelace | Ada Lovelace |
| Ada Negri | Ada Negri |
| Adab | Adab |
| Adad | Adad |
| Adad-nirari II | Adad-Nirari II |
| adagio | adagio |
| Adagio for Strings | Adagio per archi |
| adagium | adagio |
| Adaincourt | Adaincourt |
| Adainville | Adainville |
| Adair County | Contea di Adair |
| Adalbert van Lotharingen | Adalberto di Lorena |
| Adalbert van Oostenrijk | Adalberto di Babenberg |
| Adam | Adamo |
| Adam Clayton | Adam Clayton |
| Adam Copeland | Adam Copeland |
| Adam de la Halle | Adam de la Halle |
| Adam Elsheimer | Adam Elsheimer |
| Adam en Eva | Adamo |
| Adam Jerzy Czartoryski | Adam Jerzy Czartoryski |
| Adam Levine | Adam Levine |
| Adam Małysz | Adam Małysz |
| Adam Mickiewicz | Adam Mickiewicz |
| Adam Oehlenschläger | Adam Gottlob Oehlenschlager |
| Adam Opel | Adam Opel |
| Adam Sandler | Adam Sandler |
| Adam Smith | Adam Smith |
| Adam van Bremen | Adamo da Brema |
| Adam Weishaupt | Adam Weishaupt |
| Adam-lès-Passavant | Adam-lès-Passavant |
| Adam-lès-Vercel | Adam-lès-Vercel |
| adamant | adamantino |
| Adamantium | Adamantio |
| Adamawa | Adamawa |
| Adamclisi | Adamclisi |
| Adamello | Adamello |
| Adamiet | Adamite |
| Adamov | Adamov |
| Adams | Adams |
| Adams County | Contea di Adams |
| adamsappel | pomo d'Adamo |
| adamsnaald | iucca |
| Adamstown | Adamstown |
| Adamsville | Adamsville |
| Adamswiller | Adamswiller |
| Adana | Adana |
| Adapa | Adapa |
| adapteerbaar | adattabile |
| adapter | adattatore |
| adaptief | adattabile |
| Adaptive Software Development | Adaptive Software Development |
| Adar | Adar |
| Adasaurus | Adasaurus mongoliensis |
| Adast | Adast |
| Add-on | Plugin |
| Adda | Adda |
| Addax | Addax nasomaculatus |
| addendum | aggiunta |
