| Abbreviation | Definition |
|---|---|
| ECGL | Engineering Computer Graphics Laboratory |
| ECI | Engineering for Civil Infrastructure |
| ECIE | Electronics Circuits and Information Engineering |
| ECIF | Engineering Capital Improvements Fund |
| ECL | Engineering Change Letter |
| ECL | Engineering Control Limited |
| ECM | Energy Consumption Management |
| ECMA | Engineering College Magazines Associated |
| ECN | Engineering Consultants Norway |
| ECO | Engineering Change Orders |
| ECP | Elephal Concrete Pump |
| ECP | Engineering Change Proposal |
| ECP | Engineering Change Proposals |
| ECR | Engineering Change Requests |
| ECRB | Engineering Criteria Review Board |
| ECS | Engineering and Computer Simulations |
| ECS | Engineering Computer Simulations |
| ECSA | Engineering Council of South Africa |
| ECSP | Engineering Consultancy Services Punjab |
| ECST | Engineering Computer Science and Technology |