| Acronym | Definition |
|---|
| HHA➣Hawker Hunter Aviation (jet contractor; UK) |
| HHA➣Home Health Agency |
| HHA➣Home Health Aide |
| HHA➣Hip Hop Abs (exercise) |
| HHA➣Historic Houses Association (London, UK) |
| HHA➣Houston Housing Authority (Houston, TX) |
| HHA➣Homology, Homotopy and Applications |
| HHA➣Holly Hill Academy (Holly Hill, SC) |
| HHA➣Harmonization for Health in Africa |
| HHA➣Health Hazard Assessment |
| HHA➣Highland Housing Alliance (UK) |
| HHA➣Hate Hurts America (interfaith coalition) |
| HHA➣High Hazard Area |
| HHA➣Hand Held Assistance |
| HHA➣Highland Housing Association (Scotland, UK) |
| HHA➣Hand Held Assays |
| HHA➣Hip Hop Alliance (Skidmore College; Saratoga Springs, NY) |
| HHA➣Hamburger Hochbahn Aktiengesellschaft |
| HHA➣Hawai'i Homeschool Association |
| HHA➣Hyde Housing Association (UK) |
| HHA➣Headwaters Health Authority |
| HHA➣Hypogonadotropic Hypogonadism and Anosmia |
| HHA➣Hard Hat Area |
| HHA➣High Hard Armor |
| HHA➣Hungarian Horse Association |
| HHA➣Happy Hackers Alliance |
| HHA➣Hypoestrogenic Hypothalamic Amenorrhea |
| HHA➣Health, Human Services, and Aging Committee (Ohio) |