| Rank | Abbreviation | Meaning |
|---|
| ***** | HSEC | Health Safety Environment Community
| |
| ***** | HSEC | Health Safety and Environmental Committee
| |
| **** | HSEC | Historical Society of the Episcopal Church
| |
| *** | HSEC | Highway Safety Engineering Committee
| |
| *** | HSEC | Health, Safety and Environment Committee
| |
| ** | HSEC | Health Safety Environmental and Community
| |
| ** | HSEC | Health Science Education Center
| |
| * | HSEC | Humane Society of Etowah County
| |
| * | HSEC | Human Splenic Endothelial Cells
| |
| * | HSEC | Humane Society of Elkhart County
| |
| * | HSEC | High Speed Expansion Card
| |
| * | HSEC | Humane Society of Eastern Carolina
| |
| * | HSEC | hepatic sinusoidal endothelial cells
| |
| * | HSEC | Housing Services for Eaton County
| |
| * | HSEC | Human Services Education Council
| |
| * | HSEC | Humane Society of Escambia County
| |
| * | HSEC | Hawaiian Sovereignty Elections Council
| |
| * | HSEC | Health Safety and Engineering Consultants Ltd.
| |
| * | HSEC | Higher School of Economics
| |
| * | HSEC | Humane Society of Eastern Carolina's
| |
| * | HSEC | Hunter Safety Education Course
| |
| * | HSEC | Hope Special Education Center
| |
| * | HSEC | Health Safety and Engineering Consultants
| |