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