| ad lib | a discreción |
| Ad maiorem Dei gloriam | Ad maiorem Dei gloriam |
| ad nauseam | hasta la saciedad |
| Ad-Aware | Ad-Aware |
| Ad-hoc On-demand Distance Vector | AODV |
| ad-lib | improvisación |
| Ad-supported computer software | Adware |
| Ada | Lenguaje de programación Ada |
| Ada Falcon | Ada Falcón |
| Ada Lovelace | Ada Lovelace |
| Ada of Caria | Ada de Caria |
| Ada Programming | Programación en Ada |
| Adab | Adab |
| Adad | Ishkur |
| Adad-nirari I | Adad-nirari I |
| adage | adagio |
| adagio | adagio |
| Adai | Adai |
| Adaja | Adaja |
| Adalbert Gyrowetz | Vojtech Jirovec |
| Adalbert Krüger | Adalbert Krüger |
| Adalbert of Mainz | Adalberto de Maguncia |
| Adalbert of Prague | Adalberto de Praga |
| Adalberto Alvarez y su Son | Adalberto Álvarez y su Son |
| Adalgis | Adelchis de Benevento |
| Adam | Adán |
| Adam Afzelius | Adam Afzelius |
| Adam Albert von Neipperg | Adam Adalbert von Neipperg |
| Adam and Eve | Adán y Eva |
| Adam Bartsch | Adam von Bartsch |
| Adam Clayton | Adam Clayton |
| Adam Copeland | Adam Copeland |
| Adam Czerniaków | Adam Czerniaków |
| Adam Darski | Adam Darski |
| 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 Kazimierz Czartoryski | Adam Kazimierz Czartoryski |
| Adam Levine | Adam Levine |
| Adam Małysz | Adam Małysz |
| Adam Mickiewicz | Adam Mickiewicz |
| Adam of Bremen | Adán de Bremen |
| Adam Opel | Adam Opel |
| Adam Ries | Adam Ries |
| Adam Sandler | Adam Sandler |
