| Abbreviation | Definition |
|---|---|
| HKMU | Hong Kong Mountaineering Union |
| HMECU | Hamilton Municipal Employees' Credit Union (now Healthcare and Municipal Employees Credit Union; Ham |
| HMECU | Healthcare and Municipal Employees Credit Union (Canada) |
| HOB | Head of Base |
| HOPE | Helpers Overcoming Problems Effectively |
| HOTELICCA | Hotel, Liquor, Catering, Commercial And Allied Workers Union of South Africa |
| HPAE | Health Professionals and Allied Employees |
| HPCU | Harbor Pointe Credit Union |
| HPCU | Houston Police Credit Union |
| HPCU | Houston Postal Credit Union |
| HRAB | Hotel and Restaurant Association of Baguio |
| HRPU | Humanitarian Research Public Union |
| HSCU | Healthcare Services Credit Union |
| HSCU | Heritage Savings Credit Union |
| HSCU | Heritage South Credit Union |
| HSFCU | Hamilton Sundstrand Federal Credit Union |
| HSFCU | Hawaii Schools Federal Credit Union |
| HSU | Health Services Union |
| HSU | Hot Steamy Union |
| HSWU | Health Service Workers Union |