| Abbreviation | Definition |
|---|---|
| HDT | Hardware Description Table |
| HDV | High Density Voice |
| HDX | Half Done Xconnect |
| HEC | Header Error Checksum |
| HEMS | High-level Entity Management System |
| HFC | Hybrid Fiber Coaxial |
| HFCA | Hexanary Feedback Contention Access |
| HFNC | Home Furnishings Networking Conference |
| HFR | Huge Fast Router |
| HFS | Hierarchical File System |
| HFS | HTTP File Server |
| HGW | Home Gateway |
| HID | Host Intrusion Detection |
| HIF | Host Interconnect Framework |
| HIFS | Handy Information For Sysadmins |
| HII | Home Information Infrastructure |
| HIP | Host Information Program |
| HIP | Host Input Process |
| HIP | Host Interface Portal |
| HIP | HSSI Interface Processor |