| astrolog | astrologer |
| astrologi | astrology |
| astrologisk | astrological |
| astrometri | astrometry |
| astronaut | astronaut |
| astronautik | astronautics |
| astronom | astronomer |
| astronomi | astronomy |
| Astronomins historia | History of astronomy |
| astronomisk | astronomic |
| astronomisk enhet | astronomical unit |
| Astronomiska symboler | Astronomical symbols |
| astronomiskt | astronomically |
| Astrophytum | Astrophytum |
| Asturconponny | Asturcon |
| Asturien | Asturias |
| asturiska | Asturian |
| Astyages | Astyages |
| Astyanax | Astyanax |
| Asuka | Asuka period |
| Asuncion Island | Asuncion Island |
| Asunción | Asunción |
| Asuras | Asura |
| ASUS | ASUS |
| Asvaghosa | Aśvaghoṣa |
| ASX | Asx |
| asyl | asylum |
| asymmetri | asymmetry |
| asymmetrisk | asymmetric |
| Asymmetrisk information | Information asymmetry |
| Asymmetrisk krigföring | Asymmetric warfare |
| Asymmetrisk kryptering | Public-key cryptography |
| asymptot | asymptote |
| Asymptotiska jättegrenen | Asymptotic giant branch |
| Asynchronous Transfer Mode | Asynchronous Transfer Mode |
| Asyut | Asyut |
| Asyut guvernorat | Asyut Governorate |
| asätare | scavenger |
