| Abbreviation | Definition |
|---|---|
| HRBC | Harris Ranch Beef Company |
| HRBC | Hawkesbury River Bullet Company |
| HRC | Hard Rock Cafe |
| HRC | Hazards Research Corporation |
| HRC | Headed Reinforcement Corp |
| HRC | Honda Racing Company |
| HRCT | Hotel Restaurant Catering and Tourism |
| HRDC | Horticultural Research and Development Corporation |
| HRDC | Human Resource Development Corporation |
| HRDC | Human Resources Development Canada |
| HRDD | HuaRun Dadong Dockyard |
| HRDD | Human Resources Development Division |
| HRDE | Human Resource Development and Employment, Inc. |
| HRDE | Human Resources Development Experts |
| HRDE | Hunter, Richey, DiBenedetto, & Eisenbeis, LLP. |
| HRDF | HISmelt Research and Development Facility |
| HRDI | High- Rez Diagnostics, Inc. |
| HRE | Howe Racing Enterprises |
| HREC | Highland Rim Economic Corporation |
| HRH | Herts Removal and Haulage |