CSEC
# CSEC

CSEC may refer to:

* Calgary Sports and Entertainment Corporation, owner and operator of several Calgary-based sports teams
* Caribbean Secondary Education Certificate
* Communications Security Establishment Canada, later known as the Communications Security Establishment, the Canadian government's national cryptologic agency
* Commercial sexual exploitation of children
* Commission on State Emergency Communications, an agency of the State of Texas; see Steve Mitchell
* Citadel Security Services, in the computer game Mass Effect
