| Acronym | Definition |
|---|
| ECSU➣Ethiopian Civil Service University |
| ECSU➣Elizabeth City State University (Elizabeth City, NC, USA) |
| ECSU➣Eastern Connecticut State University (Willimantic, CT, USA) |
| ECSU➣Electronics and Communication Sciences Unit (India) |
| ECSU➣Emily Carr Students' Union (Canada) |
| ECSU➣Electronic Communications Surveillance Unit (US FBI) |
| ECSU➣Erindale College Student Union |
| ECSU➣Electronic Crash Sensor Unit |
| ECSU➣Emmanuel College Student Union (Cambridge, UK) |
| ECSU➣Electrical Certification Support Unit |
| ECSU➣Essential CONUS Support Unit |