| Abbreviation | Definition |
|---|---|
| ETAG | Edinburgh Tourism Action Group |
| ETAS | Electronic Travel Authority System |
| ETC | Environmental Traveling Companions |
| ETD | Executive Travel Directors |
| ETDP | Eco Tourism Development Programme |
| ETEA | Emerging Tourism Enterprises Association |
| ETEZ | Effective Tourism Exclusion Zones |
| ETFI | European Tourism Future Institute |
| ETFI | European Tourism Futures Institute |
| ETFS | Expert Travel Financial Security |
| ETFT | Emiratization Task Force for Tourism |
| ETG | Exhibit and Travel Group |
| ETG | Exhibition Travel Group |
| ETIAS | European Travel Information and Authorization System |
| ETLR | Eat Travel Live and REPEAT |
| ETMS | Employee Travel Monitoring System |
| ETRB | Emerald Tourist Railway Board |
| ETS | Everyone Travels Safely |
| ETSI | Educational Travel Services Inc |
| ETSI | European travel and sightseeing institute |