| Abbreviation | Definition |
|---|---|
| HONR | Half Of Nothing Records |
| HOOA | Honor Orchestra of America |
| HOT | Hot Open Tickets |
| HOTBS | Heartache On The Big Screen |
| HOTM | Hold On Till May |
| HP | Hit Parade |
| HPO | Hamilton Philharmonic Orchestra |
| HPRQ | Highly Prominent, Royal Quality |
| HPSM | Health Promotion in Schools of Music |
| HQM | High Quality Music |
| HQR | High Quality Rip |
| HRCB | Harrisonburg Rockingham Concert Band |
| HREF | High Resolution Ensemble Forecast |
| HREP | Hard Rock Erection Project |
| HRMB | Hampton Roads Metro Band |
| HRO | Harvard Radcliffe Orchestra |
| HSDM | Hazes Deame Record Label |
| HSFR | High-Speed-Flower Records |
| HSH | Humbucker, Single coil, Humbucker (Electric guitar pickup layout) |
| HSI | Honeypops Sweet Inspirations |