| Abbreviation | Definition |
|---|---|
| HRLN | Human Rights Law Network |
| HRTO | Human Rights Tribunal of Ontario |
| HRU | Hostage Rescue Unit |
| HS | Hardcore Sociopath |
| HS | Home Search |
| HSD | Honestly Significant Difference |
| HSI | Historical Scene Investigation |
| HSL | Health and Safety Law |
| HSLE | Homeland Security Law Enforcement |
| HSLJ | High School for Law and Justice |
| HSLS | Harvard Space Law Society |
| HSS | Hike, Stalk, Shoot |
| HSSJ | Human Services and Social Justice |
| HST | Harlem Style Training |
| HSV | Head Strong Violence |
| HT | Handy Talkie |
| HT | Human Transcript |
| HTCC | High Tech Crime Consortium |
| HTCN | High Tech Crime Network |
| HTCS | Healthcare Travel Costs Scheme |