| Abbreviation | Definition |
|---|---|
| THA | The Hamster Alliance |
| THA | Thomas Horton Associates, Inc. |
| THB | The Home Body |
| THBC | The Hair and Beauty Company |
| THBC | Todd Hess Building Company |
| THC | Tenet Healthcare Corp |
| THC | The Hacker's Choice |
| THC | Theo's House of Celery |
| THC | Tundra Hippy Comix |
| THCA | 3-C Trucking, S.A.R. Distribution, Inc. |
| THD | The Hotel Directory |
| THDC | The High Desert Collective |
| THE | Times Higher Education |
| THES | Toronto Hydro Electric System |
| THFC | The Housing Finance Corporation |
| THG | The Hancock Group, L. L. C. |
| THG | The Hungover Gourmet |
| THG | Tom Hom Group |
| THG | Tom's Hardware Guide |
| THH | The Hardwood and Hardware Company |