| Acronym | Definition |
|---|
| AESS | Agenzia per l'Energia e lo Sviluppo Sostenibile di Modena (Italian: Agency for Energy and Sustainable Development of Modena) |
| AESS | Aerospace and Electronic Systems Society (IEEE) |
| AESS | Aeronautical Systems Squadron (US Air Force) |
| AESS | Architecturally Exposed Structural Steel |
| AESS | Auto Engine Start Stop |
| AESS | Association des Employé(e)s en Sciences Sociales |
| AESS | Allied Environmental Support System (NATO tool) |
| AESS | Agencia Europea Para la Seguridad y la Salud en el Trabajo (Spanish) |
| AESS | Association for Environmental Studies and Sciences |
| AESS | Automatic Electronic Switching System(s) |
| AESS | Aircraft Electrical Servicing System (US Navy) |
| AESS | Aircraft Environmental Surveillance System |
| AESS | Analog Event Subsystem |
| AESS | Alpha Energy Spectral Simulator |
| AESS | America's Elite Sniper Squad (gaming clan) |