| Term | Full Form | Category |
|---|---|---|
| EGCS | East Grinstead Choral Society | Others |
| EGCS | Electronic Grade Change System | Others |
| EGCS | Elevator Group Control System | Others |
| EGCS | Elk Grove Charter School | Others |
| EGCS | English Guernsey Cattle Society | Others |
| EGCS | Enhanced Gnu Compiler System | Others |
| EGCS | Environmental Generation Control System | Others |
| EGCS | Ethos Group Compliance Solutions | Others |
| EGCS | Exhaust gas cleaning system | Others |
| EGCS | Exhaust Gas Cleaning Systems | Others |
| EGCS | Experimental GNU Compiler System | Others |
| EGCS | Sturgate, United Kingdom | Others |