| Abbreviation | Definition |
|---|---|
| HOTA | Hands On Trade Association |
| HOTA | Humberside Offshore Training Association |
| HOTMESS | hotmess or Hot Mess or HOTMESS or HOT MESS:Happiness Overland Travel Ministry for Economical Surviva |
| HPA | Hollywood Professional Association |
| HPA | Hurlingham Polo Association |
| HPAA | Hatfield Peverel Allotment Association |
| HPAA | Heartland Pyrotechnic Arts Association |
| HPAI | Healer Practitioner Association International |
| HPAI | Healthy Pheasant Association Informants |
| HPAR | Huron Perth Association of REALTORS |
| HPCA | Halton Peel Communications Association |
| HPCA | Hawaii Pest Control Association |
| HPCA | Hawaii Primary Care Association |
| HPCA | Hawai'i Primary Care Association |
| HPCA | Himachal Pradesh Cricket Association |
| HPFA | Hampshire Playing Fields Association |
| HPFA | Hanborough Playing Fields Association |
| HPFA | Himachal Pradesh Football Association |
| HPFA | Humber Playing Fields Association |
| HPFA | Hunmanby Playing Fields Association |