| Abbreviation | Definition |
|---|---|
| ETSP | Electronic Track Surge Protector |
| ETT | Electric Transmission Texas |
| ETT | Electrical Training Trust |
| ETTM | Electronic Tolling and Traffic Management |
| ETTM | Electronic Tolling Traffic Management |
| ETTM | Electronics Toll Traffic Management |
| ETU | Electronic Trip Unit |
| ETV | Electric Track Vehicle |
| ETV | Electronic Tourist Visa |
| ETV | Electronic Travel Visa |
| ETW | Electric Torque Wrenches |
| ETWD | Electronic Technical Work Document |
| ETWD | electronic Technical Work Documents |
| ETWG | Electronic Trading Working Group |
| ETWI | Electrical through wafer interconnects |
| ETWIS | Electronic Time Warning Indication System |
| ETWIS | Electronic Time & Warning Indication System |
| EUAC | Electrical Unilateral Apprenticeship Committee |
| EUB | Electric Upright Basses |
| EUC | Electric Utility Commission |