| HRH | Common header for resources and C++
| Others |
| HRH | Hannibal Regional Hospital
| Others |
| HRH | Hard Rock Hotel
| Others |
| HRH | Hendricks Regional Health
| Others |
| HRH | Her Royal Highness
| Others |
| HRH | Herts Removal and Haulage
| Others |
| HRH | High Ratio Hypoid
| Others |
| HRH | Hilb Rogal Hobbs
| Others |
| HRH | Hilb, Rogal, and Hamilton
| Others |
| HRH | His Royal Heineken
| Others |
| HRH | His Royal Highness
| Others |
| HRH | His Royal Hotness
| Others |
| HRH | His Royal Hypocrite
| Others |
| HRH | Holdfast Rubber Highway
| Others |
| HRH | Holy Rosary Healthcare
| Others |
| HRH | Homeless Reentry Helpers
| Others |
| HRH | Homer Rainey Hall
| Others |
| HRH | Hot Rod Heart
| Others |
| HRH | Hot Rod Helicopter
| Others |
| HRH | Hot Rod Heritage
| Others |
| HRH | Hot Rod Holiday
| Others |
| HRH | Houlton Regional Hospital
| Others |
| HRH | Howard R Hope
| Others |
| HRH | Hudson Regional Hospital
| Others |
| HRH | Hudson River Housing
| Others |
| HRH | Human Resources for Health
| Others |
| HRH | Hurricane Response Hub
| Others |
| HRH | Hydralazine Reserpine and Hydrochlorothiazide
| Others |