| Abbreviation | Definition |
|---|---|
| HIS | High-resolution Interferometer Spectrometer |
| HLMS | High Latitude Mnitoring Station |
| HLMS | High-Latitude Monitoring Station |
| HMMFC | House Merchant Marine and Fisheries Committee |
| HMSC | Hatfield Marine Science Center |
| HMSC | Huntsman Marine Science Centre |
| HMV | Highly Maneuverable Vehicle |
| HOC | Hydrophobic Organic Compound |
| HOT | Hawaiian Ocean Time series |
| HOTO | Health Of The Oceans |
| HPCC | High Performance Computing and Communications Program and Information Technology |
| HPD | Hourly Precipitation Data |
| HRD | Hurricane Research Division |
| HRIR | High Resolution Infrared Radiometer |
| HRPT | High Resolution Picture Transmission |
| HRS | High Resolution Spectrometer |
| HRTWN | Hawaii Regional Tsunami Warning Network |
| HSCT | High Speed Civil Transport |
| HSE | Health, Safety, and Environment |
| HSRP | High Speed Research Program |