| Abbreviation | Definition |
|---|---|
| HHR | Heritage High Roof |
| HISA | Health Informatics Service Architecture |
| HKA | Harris Kupfer Architects |
| HKIA | Hong Kong Institute of Architects |
| HLA | Horticulture and Landscape Architecture |
| HLD | Heavy Lifting Device |
| H'line | Hairline |
| HMA | Hagemeister and Mack Architects |
| HMA | Hagemeister Mack Architects |
| HMA | Hanrahan Meyers Architects |
| HMB | Home Manufacturers Council of NAHB |
| HMKA | Hinson Miller Kickirillo Architects |
| HMS | Hazard Mitigation Survey |
| HNC | Hierarchical Network of Concepts |
| HOB | Head Of Base |
| HOM | Hall Of Mirrors |
| HOMTA | Hierarchical Orderd Macroporous TiO2 Architecture |
| HPAC | Heating, Piping, and Air Conditioning |
| HPCO | High Pressure Cut Out |
| HPDL | High Pressure Decorative Laminate |