| Abbreviation | Definition |
|---|---|
| H/R | hit and run |
| H+R | hit and run |
| HAA | Heavy Anti Archiver |
| HAB | Help A Buddy |
| HAB | Hydraulics Appeals Board |
| HACC | Historically Accurate Chronological Chain |
| HAG | Heavy Assault Gauss |
| HALC | HIV AIDS Legal Centre |
| HALC | HIV/AIDS Legal Centre |
| HALP | HIV AIDS Law Project |
| HALP | Houston Association of Legal Professionals |
| HALT | Hang All Lawyers Today |
| HALT | Help Abolish Legal Tyranny |
| HARCFL | Heart of America Regional Computer Forensics Laboratory (US Department of Justice) |
| HART | Harm assessment risk tool |
| HAV | Hug A Villain |
| HAVEN | Help Against Violent Encounters Now |
| HBAG | Harvey Birdman Attorney General |
| HBC | Hit By Car |
| HBCW | Hernando Beach Crime Watch |