| ETAS | Earthworks Training and Assessment Services 
| Others |
| ETAS | Effective True Airspeed Suggest
| Others |
| ETAS | Electronic Trademark Assignment System
| Others |
| ETAS | Electronic Travel Authority System
| Others |
| ETAS | Electronisch Therapie Advies Systeem
| Others |
| ETAS | Elevated Target Acquisition System
| Others |
| ETAS | Elyria Teens Achieve Success
| Others |
| ETAS | Elyria Teens Achieving Success
| Others |
| ETAS | Embedded Tradition As Springboard
| Others |
| ETAS | Emelectronic Trademark Assignment System
| Others |
| ETAS | Emergency Technical Assistance
| Others |
| ETAS | Emergency Temporary Access Service
| Others |
| ETAS | Engineering and Technology Administrative Services
| Others |
| ETAS | Engineering and Technology Alumni Society
| Others |
| ETAS | Enhanced Transfer Alerting Service
| Others |
| ETAS | Epidemic Type Aftershock Sequence
| Others |
| ETAS | Epidemic Type Aftershock Sequences
| Others |
| ETAS | Esourcesengineering And Technology Administrative Services
| Others |
| ETAS | European Trading Architecture Summit
| Others |
| ETAS | Evil Timeline Alliance and Slams
| Others |
| ETAS | Expandable Textured Aero Spheres
| Others |
| ETAS | Sembach Air Base, S-Germany
| Others |