| Abbreviation | Definition |
|---|---|
| ECP | Electrical Controller Products |
| ECP | Electron Channeling Pattern |
| ECP | Electronic (battery) Cell Protection |
| ECP | Electronic Cell Protection |
| ECP | Electronic Check Presentment |
| ECP | Engineering Change Proposal |
| ECPA | Electronic Communications Privacy Act |
| ECPD | Electronic Continuing Professional Development |
| ECPE | European Center for Power Electronics |
| ECPI | Electronic Computer Programming Institute |
| ECPI | Electronic Controlled Pneumatic Impact |
| ECPI | Electronic Corporate Pages Inc |
| ECPI | Electronic Crime Partnership Initiative |
| ECPS | Electronic Construction Permitting System |
| ECPS | electronic Contract Proposal Submission |
| ECPT | Electronic Curriculum Planning Tool |
| ECQB | Electro-Chemical Quartz crystal Balance |
| ECQM | electronic Clinical |
| ECR | Electron Cyclotron Resonance |
| ECR | Electronic Combat And Recce |