| Abbreviation | Definition |
|---|---|
| HHT | Hip Hop Therapy |
| HIAT | Home Intravenous Antibiotics Therapy |
| HIIT | High-Intensity Interval Training |
| HILT | High Intensity Laser Therapy |
| HMT | Heat and Massage Therapy |
| HMT | Heat Massage Therapy |
| HMT | Muscle Therapy |
| HNIG | Human Normal Immune Globulin |
| HOT | Hyperbaric Oxygen Therapy |
| HPPT | Honors Program in Physical Therapy |
| HPTC | Haymarket Physical Therapy and Chiropractic |
| HRT | Herbal Relief Therapy |
| HRT | Hormonal Replacement Therapy |
| HRT | Hormone Therapy |
| HTCA | Hormone Therapy Centers of America |
| HTI | Horticultural Therapy Institute |
| HTPQ | Horticultural Therapy Pretest Questionnaire |
| HTS | Home Therapy Solutions |
| HTU | Hyperbaric Therapy Unit |
| IAOPT | Institute for the Advancement of Orthopedic Physical Therapy |