| ad hoc | ad hoc |
| Ad hoc committee | Commission temporaire |
| Ad hominem | Argumentum ad hominem |
| ad infinitum | à l'infini |
| ad lib | à volonté |
| Ad maiorem Dei gloriam | Ad maiorem Dei gloriam |
| ad nauseam | jusqu'à la nausée |
| Ad-Aware | Ad-Aware |
| Ad-hoc On-demand Distance Vector | Ad-hoc On-demand Distance Vector |
| ad-lib | improvisation |
| Ad-supported computer software | Publiciel |
| Ada | Ada |
| Ada Air | Ada Air |
| Ada Ciganlija | Ada Ciganlija |
| Ada Kaleh | Ada Kaleh |
| Ada Lovelace | Ada Lovelace |
| Ada of Caria | Ada de Carie |
| Ada Programming | Programmation Ada |
| ADAC | ADAC |
| Adad | Adad |
| Adad-nirari I | Adad-nerari Ier |
| Adad-nirari II | Adad-Nirari II |
| Adad-nirari III | Adad-Nerari III |
| adage | adage |
| adagio | adagio |
| Adagio for Strings | Adagio pour cordes |
| Adai | Adaizan |
| Adal Sultanate | Adal |
| Adalard of Corbie | Adélard de Corbie |
| Adalard the Seneschal | Adélard de Corbie |
| Adalbert Gyrowetz | Adalbert Gyrowetz |
| Adalbert Krüger | Adalbert Krüger |
| Adalbert of Magdeburg | Adalbert |
| Adalbert of Prague | Adalbert de Prague |
| Adalbert of Prussia | Heinrich Wilhelm Adalbert |
| Adalberto Alvarez y su Son | Adalberto Álvarez y su Son |
| Adalgis | Adalgis |
| Adaloald | Adaloald |
| Adam | Adam |
| Adam Afzelius | Adam Afzelius |
| Adam Albert von Neipperg | Adam Albert de Neipperg |
| Adam and Eve | Adam |
| Adam Asnyk | Adam Asnyk |
| Adam Bartsch | Adam von Bartsch |
| Adam Clayton | Adam Clayton |
| Adam Copeland | Adam Copeland |
| Adam Czerniaków | Adam Czerniaków |
| Adam Darski | Nergal |
| Adam de la Halle | Adam de la Halle |
| Adam Elsheimer | Adam Elsheimer |
| Adam Ferguson | Adam Ferguson |
| Adam Garcia | Adam Garcia |
| Adam Jerzy Czartoryski | Adam Jerzy Czartoryski |
| Adam Johann von Krusenstern | Johann Adam von Krusenstern |
| Adam Kazimierz Czartoryski | Adam Kazimierz Czartoryski |
| Adam Kozłowiecki | Adam Kozlowiecki |
| Adam Levine | Adam Levine |
| Adam Małysz | Adam Małysz |
| Adam Mickiewicz | Adam Mickiewicz |
| Adam Müller | Adam Müller |
| Adam Naruszewicz | Adam Stanisław Naruszewicz |
| Adam Nelson | Adam Nelson |
| Adam of Bremen | Adam de Brême |
| Adam Rhys Jones | Adam Jones |
| Adam Ries | Adam Ries |
| Adam Rodríguez | Adam Rodriguez |
| Adam Sandler | Adam Sandler |
| Adam Smith | Adam Smith |
| Adam Stefan Sapieha | Adam Stefan Sapieha |
