| Acronym | Definition |
|---|
| ARES | Advanced Reservation Systems, Inc |
| AReS | Availability, Reliability and Security (International Conference) |
| ARES | Amateur Radio Emergency Services |
| ARES | American Real Estate Society |
| ARES | Astromaterials Research and Exploration Science |
| ARES | Advanced Rheometric Expansion System (Rheometric Scientific, Inc.) |
| ARES | Accommodation and Real Estate Services |
| ARES | Affordable Responsive Spacelift |
| ARES | Architectural Reasoning for Embedded Systems (ESPRIT Project 20477) |
| ARES | Administrative Resource Enterprise Services |
| ARES | Architectures of Networks of Services (France) |
| ARES | Advanced Research Electromagnetic Simulator |
| ARES | Advanced Regional Exploratory System |
| ARES | Agent Rescue Emergency Simulator |
| ARES | Air Replacement Engineered Systems |
| ARES | Administrativní Registr Ekonomických Subjektu (Czech: Access to Registers of Economic Subjects) |
| ARES | Advanced Reentry System |
| ARES | Army of Rage Elite Soldiers (gaming) |
| ARES | Automated Risk Evaluation System |
| ARES | Advanced Research and Experiments in Sensing |
| ARES | Advanced Research EMP Simulator |
| ARES | Automated Reliability Estimation System |
| ARES | Atlas Régional des Éléments Sensebles (French: Sensitivity Mapping Atlas) |
| ARES | Association of Retired ESA (European Space Agency) Staff |
| ARES | Agile Responsive Effectiveness Support |