EGS is a TLA that may stand for:
- Edmonton Geological Society
- Edwards Graphics Supplies Ltd. (egs.com)
- Electron Gamma Shower (computer program)
- Electronic Government Solutions
- Electronic grade silicon
- Electronic guidance system
- End game scoring
- Enhanced geothermal system
- European Geophysical Society
- European Graduate School (egs.edu)
- European Ground Station
- Experimental ground station
- EGS GmbH (egs.net)