| Abbreviation | Definition |
|---|---|
| HBW | Half Band Width |
| HC | Heckel Crest |
| HCDR | Hate Crew Deathroll - fourth studio album of the finnish melodic death metal band Children of Bodom. |
| HCFC | Heartland Community Flute Choir |
| HCHSBOB | Habersham Central High School Band Of Blue |
| HCMB | Hobson City Mob Boys |
| HCME | Harvard Chinese Music Ensemble |
| HCMF | Hawaii Chamber Music Festival |
| HCMF | Huddersfield Contemporary Music Festival |
| HCMP | Human Computer Music Performance |
| HD | Hammered Dulcimer |
| HDCM | High Desert Chamber Music |
| HDHC | Huddersfield Hardcore |
| HDTC | Hornchurch Drum and Trumpet Corps |
| HDUI | Honorary Discharge Under the Influence |
| HEFS | Hydrologic Ensemble Forecast Service |
| HEFS | Hydrologic Ensemble Forecast System |
| HEFS | Hydrologic Ensemble Forecasting Service |
| HEFS | Hydrologic Ensemble Forecasting System |
| HELO | Huddersfield Experimental Laptop Orchestra |