| Abbreviation | Definition |
|---|---|
| HFSA | Hispanic Faculty/Staff Association |
| HGA | Hardware Group Association |
| HGAS | Highland Games Association Of Switzerland |
| HGCA | Houston Gun Collectors Association |
| HGEA | Hawaii Government Employees Association |
| HGPA | Home Gift Providers Association |
| HGPA | Houston Gas Processors Association |
| HGPA | Houston Gas Producers Association |
| HGPA | Hunter General Practitioners Association |
| HGSA | Harmony Grove Spiritualist Association |
| HGSA | Helena Girls Softball Association |
| HGSA | Hellenic Graduate Student Association |
| HGSA | Hilliard Girls Softball Association |
| HGSA | Home Garden Seed Association |
| HGSA | Humanities Graduate Student Association |
| HHA | Historic Harrisburg Association |
| HHA | Historic Houses Association |
| HHKPA | Hammersmith Hospital Kidney Patients' Association |
| HHSA | Harford Horse Shows Association |
| HHSA | Hasbrouck Heights Soccer Association |