| Abbreviation | Definition |
|---|---|
| HCCA | High Current Car Audio |
| HCLA | Hardware CLeat Angle |
| HCP | Hardened Cement Paste |
| HD | Hand Drawn |
| HD | Heavy Duty |
| HD | High Detergent |
| HD | High Durability |
| HD | Highly Desired |
| HDCH | Heavy Duty Cartridge Heater |
| HDD | Heavy Duty Dry |
| HDD | Horizontal Directional Drill |
| HDF | High Density Fibreboard |
| HDM | Helium Distribution Manifold |
| HDR | Hard Disk Recorder |
| HDV | Heavy Duty Vented |
| HDVD | High-definition Video Disc |
| HDVD | High-definition Video Downstream |
| HEP | Hydro Electric Power |
| HEPA | High Efficiency Particulate Air |
| HF | High Foam |