| Atari Jaguar | Atari Jaguar |
| Atari POKEY | Atari POKEY |
| Atari Teenage Riot | Atari Teenage Riot |
| Atari TOS | TOS |
| Atarot Airport | Flughafen Atarot |
| Atascadero | Atascadero |
| Atascocita | Atascocita |
| Atascosa County | Atascosa County |
| Atatürk Dam | Atatürk-Staudamm |
| Atatürk International Airport | Flughafen Istanbul-Atatürk |
| Atatürk Olympic Stadium | Atatürk-Olympiastadion |
| Ataulf | Athaulf |
| Atauro Island | Atauro |
| atavaquone | Atovaquon |
| atavism | Atavismus |
| atavistic | atavistisch |
| atavistic complex | atavistischer Komplex |
| ataxia | Ataxie |
| ataxia of gait | Gangataxie |
| Ataxia telangiectasia | Louis-Bar-Syndrom |
| ataxia teleangiectasia | Ataxia teleangiectasia |
| ataxia-telangiectasia | Ataxia teleangiectasia |
| ataxia-telangiectasia syndrome | progressive zerebelläre Ataxie |
| ataxia-teleangiectasia | Ataxia teleangiectasia |
| ataxia-teleangiectasia syndrome | Ataxia teleangiectasia |
| ataxias | Ataxien |
| ataxic | ataktisch |
| ataxic breathing | ataktisches Atmen |
| ataxic nystagmus | ataktischer Nystagmus |
| ataxic respiration | ataktische Atmung |
| ataxite | Ataxit |
| ataxites | Ataxite |
| Ataxy | Ataxie |
| Atayal | Atayal |
| Atayal people | Atayal |
| atazanavir | Atazanavir |
| ATB | ATB |
| Atbarah | Atbara |
| Atbarah River | Atbara |
| Atbash | Atbash |
| ATC | ATC |
| ATC code A | ATC |
| ATC code B | ATC |
| ATC code C | ATC |
| ATC code D | ATC |
| ATC code G | ATC |
| ATC code H | ATC |
| ATC code J | ATC |
| ATC code L | ATC |
| ATC code M | ATC |
| ATC code N | ATC |
| ATC code P | ATC |
| ATC code R | ATC |
| ATC code S | ATC |
| ATC code V | ATC |
| Atchison | Atchison |
| Atchison County | Atchison County |
| ATCO's strike | Floglotsenstreik |
| ATD | asynchrone Multiplextechnik |
| ATE | Prüfautomat |
| ate of inflow | Wasserzufluss |
| ate up | aß auf |
| atectonic | atektonisch |
| Atef Ebeid | Atif Abaid |
| Atef Sedki | Atif Muhammad Nagib Sidqi |
| atelectasis | Lungenatelektase |
| atelectatic | atelektatisch |
| atelestite | Atelestit |
| Atelidae | Klammerschwanzaffen |
| atelier | Künstlerwerkstatt |
| ateliers | Künstlerwerkstätten |
| Ateliers de Construction Aéronautique de Zeebruges | ACAZ |
| Atelinae | Klammerschwanzaffen |
| atellite | Prüfautomat |
| Atelopus | Stummelfußfrösche |
| atelosteogenesis | Atelosteogenesis |
