| Abbreviation | Definition |
|---|---|
| ECRC | Enron Creditors Recovery Corp |
| ECRI | East Carolina Radio Inc |
| ECRI | Environmental Criminology Research Inc |
| ECRL | Emera Caribbean Renewables Ltd |
| ECS | Economic Consultancy House |
| ECS | Electronic Control Services Company |
| ECS | Elitegroup Computer Systems |
| ECS | Engineered Compost Systems |
| ECS | Engineering Career Services |
| ECS | Engineering Computer Services |
| ECSC | Edinburgh Community School Corporation |
| ECSF | Ella Cheong Spruson Ferguson |
| ECSF | Ella Cheong Spruson & Ferguson |
| ECSG | European Company Sport Games |
| ECSI | Educational Computer Systems Inc |
| ECSI | Environmental Control Solutions Inc |
| ECSS | Egyptian Company for Silos and Storage |
| ECTC | Emerald Coast Theatre Company |
| ECTC | Emily Cooperative Telephone Company |
| ECTS | Electronic Computer Trade Show |