| Acronym | Definition |
|---|
| CSEC | Commercial Sexual Exploitation of Children |
| CSEC | Communications Security Establishment Canada (US National Security Agency equivalent in Canada) |
| CSEC | Commission on State Emergency Communications (Texas) |
| CSEC | Caribbean Secondary Examination Certificate (Caribbean Examinations Council) |
| CSEC | Child Safety Education Coalition (Royal Society for the Prevention of Accidents; UK) |
| CSEC | Computerized Self Evaluation Checklist |
| CSEC | Clean and Safe Energy Coalition |
| CSEC | Albert P. Crary Science and Engineering Center, McMurdo Station, Antarctica |
| CSEC | Combat Systems Executive Committee |
| CSEC | Common Software Executive Council |
| CSEC | Clinical Staff Executive Committee (University of Virginia; Charlottesville, VA) |