| Abbreviation | Definition |
|---|---|
| HGV | Hydrogen Gas Valve |
| HGVT | Horizontal Ground Vibration Test |
| HH | His (Her) Highness |
| HH | Hard of hearing |
| HH | Hiatus Hernia |
| HH | Head Heavy |
| HH | Has Herpes |
| HH | Hypnogogic Hallucinations |
| HHA | Hypothalamus, Hypothesis, and Adrenal |
| HHC | Human Health Carcinogen |
| HHC | Hooters Hat Chick |
| HHC | Hammer Head Crane |
| HHEC | Handicrafts and Handloom Exports Corporation |
| HHG | Hypertrophic Hypersecretory Gastropathy |
| HHMU | Hand Held Maneuvering Unit |
| HHNS | Hyperglycemic Hyperosmolar Non-ketotic Syndrome |
| HHPS | Hazardous Household Products Symbol |
| HHS | Hyperosmolar Hyperglycemic State |
| HHT | Hereditary Hemorrhagic Telangiectasia |
| HHW | Hazardous Household Waste |
| HI | Hydriodic Acid (Hydrogen Iodide) |
| HI | Hearing Impaired |
| HI | Hyperactive Impulsive |
| HI | Health Information |
| HI | Hypoxia Ischemia |
| HI | Health Insurance |
| HI | Home Inspector |
| HIA | Health Insurance Associate |
| HIAC | Hepatic Intra-Arterial Chemotherapy |
| HIAC | Helena International Affairs Council |
| HIAC | Higher Institute of Agricultural Cooperation |
| HIB | Hemophilus Influenza B |
| HIC | Head Injury Criteria |
| HIC | Hypermethylated In Cancer |
| HIC | Hickam Air Force Base |
| HIC | Habitat International Coalition |
| HIC | Health Insurance Commission |
| HID | Human Interface Device |
| HID | HIM Interface Distributor |
| HID | Hardware Interface Device |
| HIE | Hypoxic Ischemic Encephalopathy |
| HIE | Human Intestinal Epithelium |
| HIF | Hypoxia Inducible Factor |
| HIKE | Heart-Intensive Kinetic Energy |
| HILS | Hardware In-the-Loop Simulation |
| HIM | Health Information Management |
| HIM | Hierarchy Of Interpretive Modules |
| HIM | His Imperial Majesty |
| HIM | Hardware Interface Module |
| HIMS | Health Information Management Services |