English abbreviations from est to et
- est (Estonian language (ISO 639-2 code))
- ESTA (Enterprise Systems Technology Activity)
- E-STARS (Electronic Suspense Tracking and Routing System)
- ESTARS (Electronic Suspense Tracking and Routing System)
- ESTB (Engineering Skills Training Board)
- ESTD (Electric Ship Technology Demonstrator)
- ESTEC ((organization) European Space research and TEchnology Centre)
- ESTF (European Soft Tennis Federation)
- ESTIR (Electrochemical Science and Technology Information Resource)
- ESTO (European Synthetic Turf Organisation)
- ESTRACK ((communications network) European Space TRACKing, a network of radio antennas used for communicating to spacecraft)
- ESTV (Eastern Suburbs TV)
- ESU (Emergency Services Unit)
- ESV (Engineer Support Vehicle)
- ESW (Easton State Airport)
- ESWC (Electronic Sports World Championship)
- ESWS (Enlisted Surface Warfare Specialist)
- ESY (Eat, Activity, Sleep, and You)
- ET (Electronics Technician)
- Et. (Etiam ("Also, Even"))