| Apostasie | apostasy |
| Apostatin | apostate |
| Apophänie | apophenia |
| Apostelin | apostle |
| Apostille | apostille |
| Apoptose | apoptosis |
| Apostat | apostate |
| Hypostase | hypostase |
| Aerostatik | aerostatics |
| Hämostase | coagulation |
| Ostasien | East Asia Eastern Asia |
| Eustasie | eustasy |
| Pistazie | pistachio |
| Anastasia | Anastasia Anastace Anastacia Anastase Anastasha Anastashia |
| Aphasie | aphasia |
| Apoplexie | apoplexy |
| Apostolat | apostolate |
| apostatisch | apostate |
| Apologie | apology apologia |
| Aporie | aporia |