| Abbreviation | Definition |
|---|---|
| HGA | Hercules Graphics Adapter |
| HGA | High-resolution video Graphics Adapter |
| HGFT | Hard Gear Finishing Tool |
| HHCS | Hex Head Cap Screw |
| HHP | Hand Held Programmer |
| HHSL | Home Hardware Stores Limited |
| HHT | Hardware Hacking Tutorial |
| HI | Harmful Input |
| HID | High Intensity Discharge |
| HID | Human Input Device |
| HIGH-RES | High Resolution |
| HIL | Hardware In Loop |
| HILS | Hardware-In-the-Loop Simulator |
| HIOS | Hardware Independent Operating System |
| HiPer | High Performance System on Chip |
| HiRes | High Resolution |
| HIT | Human Interface Technology |
| HITL | Hardware In The Loop |
| HITS | High Impact Theater System |
| HIWG | Hardware Industry Working Group |