| Acronym | Definition |
|---|
| HSEC➣Historical Society of the Episcopal Church |
| HSEC➣Hpss Security |
| HSEC➣Hard Sector |
| HSEC➣Homeland Security |
| HSEC➣Health Safety Environment and Community |
| HSEC➣Health Safety and Engineering Consultants Ltd. (UK) |
| HSEC➣Humane Society of Eastern Carolina (Greenville, NC) |
| HSEC➣Humane Society of Elkhart County (Bristol, IN) |
| HSEC➣Human Splenic Endothelial Cells |