| Acronym | Definition | 
|---|
| ETO➣Ethylene Oxide | 
| ETO➣European Theater Of Operations | 
| ETO➣Engineer-To-Order | 
| ETO➣Evapotranspiration | 
| ETO➣English Touring Opera (UK) | 
| ETO➣Eco Transfer Object | 
| ETO➣Engineering to Order | 
| ETO➣Extended Text Out | 
| ETO➣Etoposide | 
| ETO➣Efforts to Outcomes (Social Solutions software/services) | 
| ETO➣Endorsed Training Organisation | 
| ETO➣Earth To Orbit | 
| ETO➣Early Termination Option | 
| ETO➣European Telework Online (telecommuting) | 
| ETO➣Economic, Technical or Organisational (employment law; UK) | 
| ETO➣Earned Time Off | 
| ETO➣European Telecommunications Office | 
| ETO➣Engineering-To-Order | 
| ETO➣Exercise and Training Officer (US FEMA) | 
| ETO➣Economic Trade Office (various locations) | 
| ETO➣Electronic Trading Opportunities | 
| ETO➣Exchange Traded Option (finance) | 
| ETO➣Electronics Technology Office (DARPA) | 
| ETO➣Extended Terminal Option (IBM - IMS software) | 
| ETO➣Energy Trust of Oregon, Inc (Portland, OR) | 
| ETO➣Effects Tasking Order | 
| ETO➣Exchange Tender Offer (Eurotunnel) | 
| ETO➣Estimated Take-Off | 
| ETO➣Ergenekon Terör Örgütü (Turkish: Ergenekon Terror Organization) | 
| ETO➣Earth Traverse Outfitters (Knoxville, TN) | 
| ETO➣Electronic Trial Operations (biotechnology) | 
| ETO➣Extended Trochanteric Osteotomy (surgical operation) | 
| ETO➣Eustachian Tube Obstruction | 
| ETO➣Estimated Time of Overflight (air traffic management) | 
| ETO➣Enterprise Technology Organization | 
| ETO➣Excise & Taxation Officer (Pakistan) | 
| ETO➣Emergency Treatment Order | 
| ETO➣Equity Take Out (mortgages) | 
| ETO➣Extended Time Observation | 
| ETO➣Electrical Technical Officer (engineering) | 
| ETO➣Engineering Technology Office | 
| ETO➣Electrical-Thermal-Optical | 
| ETO➣Expeditionary Theater Opening (US Department of Defense) | 
| ETO➣Extended Technical Objective | 
| ETO➣Estimated Time in Operation (aviation) | 
| ETO➣Express Transportation Order | 
| ETO➣Expiration Term of Obligation | 
| ETO➣Evasion Tactics Order | 
| ETO➣Échocardiographie Ttransoesophagienne (French: Transesophageal Echocardiography) | 
| ETO➣Elite Tactical Operations (gaming clan) |