| Abbreviation | Definition |
|---|---|
| HUGS | Helping the Unwanted Get Started |
| HUMAN | Help Unite Minorities Against Negativity |
| HUMUSICA | Music of Humus |
| HUMY | Hmong United Methodist Youth |
| HURSDEF | Human Right, Social Development and Environmental Foundation |
| HVAF | Hoosier Veterans Assistance Foundation |
| HVCN | Huron Valley Community Network |
| HVHTA | Humber Valley Heritage Trail Association |
| HVO | Health Volunteers Overseas |
| HVWP | Hospitalized Veterans Writing Project |
| HWA | Handicapped Welfare Association |
| HWC | Holocaust Warning Center |
| HWG | Hole In The Wall Gang |
| HWGC | Hole In The Wall Gang Camp |
| HWGF | Hole In The Wall Gang Fund |
| HWI | Hawk Watch International |
| HWI | Hawk Water International |
| HWI | His Wheels International |
| I3P | Institute for Information Infrastructure Protection |
| IAAC | Irish Aid Advisory Committee |