| Abbreviation | Definition |
|---|---|
| HNA | Host Network Address |
| HNAP | Home Network Administration Protocol |
| HNAPT | Host Network Address Port Translation |
| HNAS | Hitachi Network-Attached Storage |
| HNAS | Host Networking Access Support |
| HNAS | Hyperion Network Acquisition System |
| HNI | Host Network Interface |
| HO | Host Open |
| HOD | Host On Demand |
| HOP | Hearts On Pilgrimage |
| HOP | Host Output Process |
| HPC | High Performance Computing |
| HPNA | Home Phoneline Network Adapter |
| HPNA | Home Phoneline Networking Alliance |
| HPOV | HP Open View (aka NNM) |
| HPSB | High Performance Serial Bus |
| HRDD | High Rate Data Delivery |
| HS | HS Short |
| HSA | Highest Station Address |
| HSE | High Speed Everywhere |