| Antinomie | antinomy |
| Antonymie | antonymy |
| Autonomie | autonomy |
| Antigone | Antigone |
| Antilope | antelope |
| Antimonit | antimonite stibnite |
| Antipode | antipode |
| Antisemit | anti-Semite |
| Antonomasie | antonomasia |
| antinomisch | antithetic |
| Actinoid | actinide actinoid |
| Agronomie | agronomy |
| Anomie | anomie |
| Astronomie | astronomy |
| Anatomie | anatomy |
| Autotomie | autotomy |
| Antazolin | antazoline |
| Anti-Utopie | dystopia |
| Antimer | antimere |
| Antiochia | Antioch |