| Acronym | Sense | Language | Topics |
|---|---|---|---|
| ACE | Association Charentaise pour l'Espéranto | In French | → Associations → Artificial languages (linguistics) |
| ACE | Action Communautaire pour l'Environnement | In French | → Environmental protection |
| ACE | Advisory Committee on the Environment | In English | → Environmental protection → Threats to the environment |
| ACE | Acceptance Checkout Equipment | In English | → Computer hardware → Quality management |
| ACE | Attitude Control Electronics | In English | → Electronics → Aeronautics, aircraft → Astronautics |
| ACE | Automatic Checkout Equipment | In English | |
| ACE | Angiotensin Converting Enzyme | In English | → Enzymes → Cardiology |
| ACE | Asean Centre for Energy | In English | → Energy economics |
| ACE | Association for the Conservation of Energy (www.ukace.org) | In English | → Associations → Energy economics |
| ACE | Association des Cinémathèques Européennes (www.acefilm.de) | In French | → Associations → Cinema, movies |
| ACE | American Cinema Editors (www.ace-filmeditors.org) | In English | → Organizations and associations → Cinema, movies → United States |
| ACE | Academic Challenge and Enrichment Program | In English | → Education |
| ACE | Aerosol Characterization Experiments | In English | → Meteorology, climatology |
| ACE | Access Control Entry | In English | → Computer science |