- DSEC stands for Dyal Singh Evening College (India)
- DSEC stands for Delaware Solar Energy Coalition (Newark, DE)
- DSEC stands for Drug Safety Executive Council (Needham, MA)
- DSEC stands for Double Stance, Eyes Closed
- DSEC stands for De Smet Engineers & Contractors (Belgium)
- DSEC stands for Daewoo Ship Engineering Company
- DSEC stands for Data Systems Evaluation Center
- DSEC stands for Director/ate of Security
- DSEC stands for Disability Services Ethics Committee (Australia)
DSEC