| ad us. ext. | ad us. ext |
| ad us. int. | ad us. int |
| Ad-Aware | Ad-Aware |
| Ad-Dachila | Dakhla Oasis |
| Ad-Dakahlija | Dakahlia Governorate |
| Ad-Dauha | Doha |
| Ad-Duchan | Ad-Dukhan |
| Ad-Hoc | Mobile ad-hoc network |
| Ada | Ada |
| Ada Falcon | Ada Falcon |
| Ada Lovelace | Ada Lovelace |
| Ada Negri | Ada Negri |
| Adab | Adab |
| ADAC | ADAC |
| Adad | Adad |
| Adadnirari I | Adad-nirari I |
| Adadnirari II | Adad-nirari II |
| Adadnirari III | Adad-nirari III |
| adadżio | adage |
| Adagio Albinoniego | Adagio in G minor |
| Adair Crawford | Adair Crawford |
| Adalard | Adalard of Corbie |
| Adalbert | Adalbert |
| Adaloald | Adaloald |
| Adam | Adam |
| Adam Adamandy Kochański | Adam Adamandy Kochański |
| Adam Albert Neipperg | Adam Albert von Neipperg |
| Adam Asnyk | Adam Asnyk |
| Adam Chmielowski | Albert Chmielowski |
| Adam Clayton | Adam Clayton |
| Adam Czerniaków | Adam Czerniaków |
| Adam Darski | Adam Darski |
| Adam de la Halle | Adam de la Halle |
| Adam Gabriel Garcia | Adam Garcia |
| Adam Gottlob Moltke | Adam Gottlob Moltke |
| Adam Gottlob Oehlenschläger | Adam Gottlob Oehlenschläger |
| Adam Heinrich Müller | Adam Müller |
| Adam Heinrich von Steinau | Adam Heinrich von Steinau |
| Adam i Ewa | Adam |
| Adam Jerzy Czartoryski | Adam Jerzy Czartoryski |
| Adam Joseph Maida | Adam Maida |
| Adam Kadmon | Adam Kadmon |
| Adam Karl August von Eschenmayer | Adam Karl August von Eschenmayer |
| Adam Kazimierz Czartoryski | Adam Kazimierz Czartoryski |
| Adam Kisiel | Adam Kisiel |
| Adam Kozłowiecki | Adam Kozłowiecki |
| Adam Levine | Adam Levine |
| Adam Ludwik Lewenhaupt | Adam Ludwig Lewenhaupt |
| Adam Małysz | Adam Małysz |
| Adam Mickiewicz | Adam Mickiewicz |
| Adam Mikołaj Sieniawski | Adam Mikołaj Sieniawski |
| Adam Nelson | Adam Nelson |
| Adam Opel | Adam Opel |
| Adam Opel AG | Opel |
| Adam Ożarowski | Adam Ożarowski |
| Adam Piłsudski | Adam Piłsudski |
| Adam Sandler | Adam Sandler |
| Adam Savage | Adam Savage |
| Adam Seroczyński | Adam Seroczyński |
| Adam Smith | Adam Smith |
| Adam Stanisław Naruszewicz | Adam Naruszewicz |
| Adam Stefan Sapieha | Adam Stefan Sapieha |
| Adam van Noort | Adam van Noort |
| Adam Weishaupt | Adam Weishaupt |
| Adam z Bremy | Adam of Bremen |
| Adam Zagajewski | Adam Zagajewski |
| adamaszek | damask |
| Adamawa | Adamawa |
| Adamnan | Adomnán |
| Adamov | Adamov |
| Adamovské Kochanovce | Adamovské Kochanovce |
| Adams | Adams |
| Adamswiller | Adamswiller |
| adamsyt | adamsite |
| Adana | Adana |
| Adansi North | Adansi North District |
| Adansi South | Adansi South District |
| Adapa | Adapa |
| Adapazarı | Adapazarı |
| adaptacja | adaptation |
| Adapter | Adapter |
| adaptować | adapt |
| Adar | Adar |
| Adara | Epsilon Canis Majoris |
| ADAT | ADAT |
| ADATS | Air Defense Anti-Tank System |
| Adazaur | Adasaurus |
| AdBusters | Adbusters |
| Adda | Adda River |
| addendum | addendum |
| Addis Abeba | Addis Ababa |
| Addycja elektrofilowa | Electrophilic addition |
| Adeccoligaen | Adeccoligaen |
| adekwatność | adequacy |
| adekwatny | adequate |
| Adela | Adela |
| Adela jeszcze nie jadła kolacji | Dinner for Adele |
| Adela Pennyfather | List of characters in The Chronicles of Narnia |
| Adela z Szampanii | Adèle of Champagne |
| Adelaer | Cort Adeler |
| Adelaide | Adelaide |
| Adelaide Football Club | Adelaide Football Club |
| Adelajda | Adelaide |
| Adelajda Andegaweńska | Adelaide of Anjou |
| Adelajda Burgundzka | Adelaide of Italy |
| Adelajda Sachsen-Meiningen | Adelaide of Saxe-Meiningen |
| Adelajda Węgierska | Adelaide Arpad |
| Adelard z Bath | Adelard of Bath |
| Adelberg | Adelberg |
| Adelebsen | Adelebsen |
| Adelgunde Bawarska | Princess Adelgunde of Bavaria |
| Adelina Patti | Adelina Patti |
| Adelmannsfelden | Adelmannsfelden |
| Adelschlag | Adelschlag |
| Adelsdorf | Adelsdorf |
| Adelsheim | Adelsheim |
| Adelsried | Adelsried |
| Adelzhausen | Adelzhausen |
| Ademar z Monteil | Adhemar of Le Puy |
| Ademir Marques de Menezes | Ademir Marques de Menezes |
| Aden | Aden |
| Aden Abdullah Osman Daar | Aden Abdullah Osman Daar |
| Adenau | Adenau |
| adenina | adenine |
| adenoid | adenoids |
| Adenowirusy | Adenoviridae |
| Adenozynodifosforan | Adenosine diphosphate |
| Adenozynotrifosforan | Adenosine triphosphate |
| Adeodat I | Pope Adeodatus I |
| Adeodat II | Pope Adeodatus II |
| adept | student |
| ADESG Senador Guiomard | Associação Desportiva Senador Guiomard |
| Adeste Fideles | Adeste Fideles |
| Adewale Akinnuoye-Agbaje | Adewale Akinnuoye-Agbaje |
| ADGZ | ADGZ |
| ADHD | Attention-deficit hyperactivity disorder |
| Adhemar Ferreira da Silva | Adhemar da Silva |
| Adhémar Jean de Saint-Venant | Adhémar Jean Claude Barré de Saint-Venant |
| Adi Shamir | Adi Shamir |
| Adi Śankara | Adi Shankara |
| Adi-budda | Adi-Buddha |
| Adiabene | Adiabene |
| Adiadochokineza | Dysdiadochokinesia |
| Adiafora | Adiaphora |
| Adiantum | Adiantum |
| Adil Girej | Adil Giray |
| Adinfer | Adinfer |
| adipocyt | adipocyte |
| Adirondack Red Wings | Adirondack Red Wings |
| Aditi | Aditi |
| Adium | Adium |
| Adjna | Ajna |
| Adjud | Adjud |
| Adlai Ewing Stevenson II | Adlai Stevenson |
| Adlai Stevenson | Adlai Stevenson |
| Adler | Adler |
| Adler Mannheim | Adler Mannheim |
| Adler Planetarium | Adler Planetarium |
| Adlkofen | Adlkofen |
| Admet | Admetus |
| Admete | Admete |
| admin | admin |
| administracja | administration |
| administracja publiczna | public institution of administrative nature |
| administracyjny | administrative |
| administrator | administrator |
| Administrator apostolski | Apostolic Administrator |
| administrator bazy danych | database administrator |
| administrować | administer |
| Admira Wacker Mödling | VfB Admira Wacker Mödling |
| Admiral Graf Spee | German pocket battleship Admiral Graf Spee |
| Admiral Hipper | German cruiser Admiral Hipper |
| Admiral Scheer | German pocket battleship Admiral Scheer |
| admiralicja | admiralship |
| admirał | admiral |
| Admirał Gorszkow | Soviet aircraft carrier Admiral Gorshkov |
| Admirał Kuzniecow | Russian aircraft carrier Admiral Kuznetsov |
| Admirał Nachimow | Russian armoured cruiser Admiral Nakhimov |
| Admirał Ozzel | Admiral Ozzel |
| Admirałowie polscy | List of Polish admirals |
| Adnan Hajj | Adnan Hajj photographs controversy |
| Adnan Terzić | Adnan Terzić |
| adnotacja | annotation |
| ADNR | Aggregated diamond nanorods |
| ADO | ActiveX Data Objects |
| Ado Ekiti | Ado Ekiti |
| ADO Haga | ADO Den Haag |
| Adobe Acrobat | Adobe Acrobat |
| Adobe Acrobat Connect | Adobe Acrobat Connect |
| Adobe After Effects | Adobe After Effects |
| Adobe ColdFusion | Adobe ColdFusion |
| Adobe Contribute | Adobe Contribute |
| Adobe Dreamweaver | Adobe Dreamweaver |
| Adobe Fireworks | Adobe Fireworks |
| Adobe Flash | Adobe Flash |
| Adobe Flash Lite | Adobe Flash Lite |
| Adobe FlashPaper | Macromedia FlashPaper |
| Adobe FrameMaker | Adobe FrameMaker |
| Adobe FreeHand | Macromedia FreeHand |
| Adobe ImageReady | Adobe ImageReady |
| Adobe InDesign | Adobe InDesign |
| Adobe Integrated Runtime | Adobe Integrated Runtime |
| Adobe PageMaker | Adobe PageMaker |
| Adobe Photoshop | Adobe Photoshop |
| Adobe Premiere | Adobe Premiere Pro |
| Adobe Reader | Adobe Acrobat |
| Adobe Shockwave | Adobe Shockwave |
| Adobe Systems | Adobe Systems |
| Adolf | Adolf |
| Adolf Anderssen | Adolf Anderssen |
| Adolf Butenandt | Adolf Butenandt |
| Adolf Dassler | Adolf Dassler |
| Adolf Dygasiński | Adolf Dygasiński |
| Adolf Eichmann | Adolf Eichmann |
| Adolf Erik Nordenskiöld | Adolf Erik Nordenskiöld |
| Adolf Fraenkel | Adolf Abraham Halevi Fraenkel |
| Adolf Fryderyk | Adolf Frederick of Sweden |
| Adolf Galland | Adolf Galland |
| Adolf Harnack | Adolf von Harnack |
| Adolf Hitler | Adolf Hitler |
| Adolf Hurwitz | Adolf Hurwitz |
| Adolf Joffe | Adolph Joffe |
| Adolf Kussmaul | Adolph Kussmaul |
| Adolf Loos | Adolf Loos |
| Adolf Ogi | Adolf Ogi |
| Adolf Otto Reinhold Windaus | Adolf Otto Reinhold Windaus |
| Adolf Rosner | Eddie Rosner |
| Adolf Schärf | Adolf Schärf |
