| Abbreviation | Definition |
|---|---|
| HARP | Hardware Alternate Reality Puzzle |
| HAS | Height Adjustable Stand |
| HASA | Hand-held Audio Spectrum Analyzer |
| HAT | Hardware Address Translation |
| HAT | Hardware attached on top |
| HAVI | Home Audio Video Interoperability |
| HAVS | Hardware Assisted Visibility Sorting |
| HAWA | Hardware Association of Western Australia |
| HBA | Host Bus Adapter |
| HC | Home Computer |
| hc | hybrid computer |
| HCA | Host Channel Adapter |
| HCCU | Hardware Configuration Control Utility |
| HCD | Hardware Configuration Definition |
| HCD | Host Controller Driver |
| HCF | High Cycle Fatigue |
| HCF | Host Controlled Family |
| HCI | Hardware Catalyst Initiative |
| HCL | Hardware Certification List |
| HCPS | High Current Power Supply |