| HRU | Ham Radio University 
| Others |
| HRU | Hardcopy Reconstruction Unit
| Others |
| HRU | Harness Racing Update
| Others |
| HRU | Harrison Ruzzo and Ullman
| Others |
| HRU | Harrison Ruzzo Ullman
| Others |
| HRU | HDSL Repeater Unit
| Others |
| HRU | Health Research Unit
| Others |
| HRU | Health Resource Utilization
| Others |
| HRU | Health Resources Unlimited
| Others |
| HRU | Healthcare Resource Use
| Others |
| HRU | Healthcare Resource Utilisation
| Others |
| HRU | Healthcare Resource Utilization
| Others |
| HRU | Heat Recovery Unit
| Others |
| HRU | Heat Recovery Units
| Others |
| HRU | Heat Rejection Unit
| Others |
| HRU | High Resolution Unit
| Others |
| HRU | High Resolution Unity
| Others |
| HRU | High Risk Unit
| Others |
| HRU | High-current Relay Unit
| Others |
| HRU | Horse Rescue United
| Others |
| HRU | Hospital Research Unit
| Others |
| HRU | Hostage Rescue Unit
| Others |
| HRU | Hot Rod Unlimited
| Others |
| HRU | Human Readable Url
| Others |
| HRU | Human Resources Unit
| Others |
| HRU | Human Resources University
| Others |
| HRU | Human Resources Unlimited
| Others |
| HRU | Human Rights Unit
| Others |
| HRU | Hydraulic Resistance Unit
| Others |
| HRU | Hydrogen Recovery Unit
| Others |
| HRU | Hydrologic Response Unit
| Others |
| HRU | Hydrologic Response Units
| Others |
| HRU | Hydrological Response Unit
| Others |
| HRU | Hydrological Response Units
| Others |
| HRU | Hydrosatic Release Unit
| Others |
| HRU | Hydrostatic Release Unit
| Others |
| HRU | Hydrostatic Release Units
| Others |