| Abbreviation | Definition |
|---|---|
| HRANS | Human Resources Association of Nova Scotia |
| HRMP | Health Reinsurance Management Partnership |
| HSGSirikot | Hafeez and Sons Sirikot |
| HSMAI | Hospitality Sales and Marketing Association International |
| HSMC | Health Services Management Centre |
| HSPCA | Hawaii State Primary Care Association |
| HSW | HydroScientific West |
| HTA | Home Town Association |
| HTA | Home Town Associations |
| HTCIA | High Technology Crime Investigation Association |
| HTI | Hand Tools Institute |
| HVACC | High-Voltage Apparatus Coordinating Committee |
| HVCA | Heating and Ventilating Contractors Association |
| HVI | Home Ventilating Institute |
| HVLA | Heart of Vermont Lodging Association |
| HVS | Higher Voluntary Standard |
| IA | Implementing Agency |
| IA | Ione Association |
| IAA | Institute of Actuaries of Australia |
| IAAAE | International Association of Ahmadi Architects and Engineers |