| Abbreviation | Definition |
|---|---|
| HIWA | Hawaii Injured Workers Alliance |
| HIWA | Hawaii Injured Workers Association |
| HOW | Hire Our Workers |
| HOWREMEDIALSCIENTIFICEDITINGSERVICESWILLADVANTAGEY | How Remedial Scientific Editing Services Will Advantage Your Items of paper |
| HPI | High Performance Incentive |
| HQW | Highly Qualified Workers |
| HRCC | High Road Construction Careers |
| HRMA | Human Resource Management and Administration |
| HRMA | Human Resources Management Association |
| HSCA | High School Career Academy |
| HSDC | Helping Students Discover Careers |
| HSWP | Hungarian Socialist Workers' Party |
| HSWU | Health Service Workers Union |
| HSWU | Health Services Workers Union |
| HSWU | Hye Sung Workers Union |
| HUSR | Hrvatska Udruga Socijalnih Radnika (Croatian: Croatian Association of Social Workers) |
| HWFC | Health Workers for Change |
| HWTC | Homecare Workers Training Center |
| HWTC | Hospitality Workers Training Centre |
| HWU | Health Workers Union |