| Abbreviation | Definition |
|---|---|
| HHC | Headquarters and Headquaters Company |
| HHE | HouseHold Effects |
| HHH | Hubert Horatio Humphrey |
| HHM | Household Hazardous Materials |
| HHS | Department of Health and Human Services |
| HHS | U.S. Department of Health and Human Services |
| HHSC | House Homeland Security Committee |
| HHSIG | Inspector General Office, Health and Human Services Department |
| HI | Handicap Index |
| HI | Honesty and Integrity |
| HIA | Health Information Administration |
| HIC | Health Insurance Commission |
| HIC | House Intelligence Committee |
| HICAP | High Capacity |
| HIE | Health Information Exchange |
| HIEI | Health Information Exchange and Interoperability |
| HIF-VNL | Heavy-Ion Fusion Virtual National Laboratory |
| HIM | Health Information Management |
| HIN | Holder Identification Number |
| HIP | Honor In Politics |