| Rank | Abbreviation | Meaning |
|---|
| ***** | HRFC | High Resolution Full Climatology
| |
| **** | HRFC | human reduced folate carrier
| |
| *** | HRFC | Haddington Rugby Football Club (East Lothian, Scotland, UK)
| |
| *** | HRFC | Harpenden Rugby Football Club (Australia)
| |
| *** | HRFC | Highlander Rugby Football Club
| |
| ** | HRFC | Huntington Regional Film Commission (Huntington, WV)
| |
| ** | HRFC | Haverfordwest Rugby Football Club
| |
| ** | HRFC | Havant Rugby Football Club
| |
| ** | HRFC | Halifax Rugby Football Club (Nova Scotia)
| |
| ** | HRFC | Harrow Rugby Football Club
| |
| ** | HRFC | Human Rights First the Child
| |
| ** | HRFC | Harvard Rugby Football Club
| |
| ** | HRFC | human RFC
| |
| * | HRFC | Human Replication Factor C
| |
| * | HRFC | Hampton Roads Flute Choir
| |
| * | HRFC | Hierarchical Routing and Flow Control
| |
| * | HRFC | High Risk Foot Clinic
| |
| * | HRFC | Hampton Roads Finance Company
| |
| * | HRFC | Hertford Rugby Football Club
| |
| * | HRFC | Hastings Rock Fell Club
| |
| * | HRFC | Hunter Recreational Flying Club
| |
| * | HRFC | Hammond Ranch Fire Company
| |