| acrilico | acrylvezel |
| Acrilonitrile butadiene stirene | Acrylonitril butadieen styreen |
| acrimonia | bitterheid |
| Acrisio | Akrisios |
| acro | akker |
| acrobata | acrobaat |
| acrobata che cammina sulla corda | koorddanser |
| Acrobates pygmaeus | Vliegende buidelmuizen |
| acrobatico | acrobatisch |
| Acrobatidae | Vliegende buidelmuizen |
| acrobatismo | acrobatiek |
| acrobazia | stunt |
| acrobazia aerea | kunstvliegen |
| Acrocanthosaurus atokensis | Acrocanthosaurus |
| Acrocephalus arundinaceus | Grote karekiet |
| Acrocephalus melanopogon | Zwartkoprietzanger |
| Acrocephalus orinus | Humes karekiet |
| Acrocephalus palustris | Bosrietzanger |
| Acrocephalus schoenobaenus | Rietzanger |
| Acrocephalus scirpaceus | Kleine karekiet |
| Acrochordus | Waterslangen |
| acrofobia | hoogtevrees |
| Acroleina | Acroleïne |
| acromatico | achromatisch |
| acromegalia | acromegalie |
| acronimo | afkorting |
| Acronimo ridondante | Dubbelopisme |
| acropoli | akropolis |
| Acropoli di Atene | Akropolis van Athene |
| Across the Universe | Across the Universe |
| acrostico | acrostichon |
| Acroterio | Akroterion |
| Acrux | Acrux |
| Act of Settlement | Act of Settlement |
| Acta Apostolicae Sedis | Acta Apostolicae Sedis |
| Actea | Acte Claudia |
| Actiniaria | Zeeanemonen |
| Actinobacteria | Straalzwammen |
| Actinomyces | Actinomyces |
| Actinopterygii | Straalvinnigen |
| Action Directe | Action Directe |
| Action figure | Actiefiguurtje |
| Action painting | Action painting |
| ActionScript | ActionScript |
| Actitis hypoleucos | Oeverloper |
| Active Directory | Active Directory |
| Active Server Pages | Active Server Pages |
| ActiveX | Component Object Model |
| Activity Based Costing | Activity-based costing |
| acufene | tinnitus |
