| Asparges-ordenen | Asparagales |
| Aspartam | Aspartame |
| aspekt | aspetto |
| Aspen | Aspen |
| Aspen-tree | Aspen-tree |
| Aspergers syndrom | Sindrome di Asperger |
| aspiration | aspirazione |
| aspirin | aspirina |
| Assam | Assam |
| assamesisk | assamese |
| Assassinersekten | Nizariti |
| Assembler | Assembler |
| Assemblersprog | Assembly |
| Assemblée Nationale | Assemblea Nazionale |
| Assens | Assens |
| Assens Kommune | Assens |
| assimilation | assimilazione |
| assimilere | assimilare |
| Assisi | Assisi |
| Assist | Assist |
| assistere | assistere |
| Associated Press | Associated Press |
| Association for Computing Machinery | Association for Computing Machinery |
| Association of Tennis Professionals | Association of Tennis Professionals |
| Associativitet | Associatività |
| assorteret | assortito |
| Assur | Assur |
| Assurance | Assicurazione |
| Assyrien | Assiria |
| Assyriologi | Assiriologia |
| Astana | Astana |
| Astana Team | Astana |
| astat | astato |
| Asterix | Asterix il gallico |
| asteroide | asteroide |
| Asteroidebælte | Fascia principale |
| Asters | SES Astra |
| asthenosfære | astenosfera |
| astma | asma |
| Astor Piazzolla | Ástor Piazzolla |
| Astrakan | Astrachan' |
| Astralprojektion | Esperienze extracorporee |
| Astrid Lindgren | Astrid Lindgren |
| astrofysik | astrofisica |
| astrologi | astrologia |
| Astronaut | Astronauta |
| astronautik | astronautica |
| astronom | astronomo |
| astronomi | astronomia |
| Astronomisatellitter | Telescopio spaziale |
| astronomisk enhed | unità astronomica |
| Astyages | Astiage |
| Asunción | Asunción |
| ASUS | ASUS |
| Aswan | Assuan |
| Aswandæmningen | Diga di Assuan |
| Asymmetric Digital Subscriber Line | Asymmetric Digital Subscriber Line |
| asymmetrisk | asimmetrico |
| asymptote | asintoto |
| Asynkron motor | Motore asincrono |
| at | -are |
| at forureneren betaler | principio inquinatore-pagatore |
| at samfundet betaler | principio per cui la comunità paga |
| At the Drive-In | At the Drive-In |
| At the Gates | At the Gates |
| Atabaque | Atabaque |
| Atacamaørkenen | Deserto di Atacama |
| Atassut | Atassut |
| ATC | ATC |
| ateist | ateo |
| Atelier | Laboratorio |
| Aten-asteroide | Asteroide Aten |
| Athamas | Atamante |
| Atheist Alliance International | Richard Dawkins Award |
| Athen | Atene |
| Athena | Atena |
| Athene | Atena |
| Athenæum | Ateneo di Naucrati |
| Athlon XP | Athlon XP |
| ATI | ATI Technologies |
| atju | eccì! |
| Atlanta | Atlanta |
| Atlanta Braves | Atlanta Braves |
| Atlanta Falcons | Atlanta Falcons |
| Atlanta Thrashers | Atlanta Thrashers |
| Atlanterhavet | Oceano Atlantico |
| Atlantic City | Atlantic City |
| Atlantis | Atlantide |
| Atlantisk plettet delfin | Stenella frontalis |
| Atlantvolden | Vallo Atlantico |
| atlas | atlante |
| Atlas-Ceder | Cedrus atlantica |
| Atlasbjergene | Atlante |
| Atlasløve | leone dell'Atlante |
| Atletik | Atletica leggera |
| atlingand | marzaiola |
