| Acronym | Definition |
|---|
| THA | Thailand (ISO Country code) |
| THA | Thai Airways (ICAO code) |
| THA | Total Hip Arthroplasty |
| THA | Tobago House of Assembly |
| THA | Trends in Health and Aging |
| THA | Toll Highway Authority (Illinois) |
| THA | Temporary Housing Assistance (emergency management) |
| THA | Threat Avoidance |
| THA | Texas Hospital Association |
| THA | Temporary Holding Area |
| THA | Toshiba Home Appliances (Japan) |
| THA | Temporary Help Agency (various locations) |
| THA | Tampa Housing Authority (Florida) |
| THA | Tennessee Hospital Association (Nashville, TN) |
| THA | Track and Hold Amplifier (electronics) |
| THA | Atlantic Thread Herring (FAO fish species code) |
| THA | The Historical Archive |
| THA | Tuscaloosa Housing Authority (public housing agency; Tuscaloosa, AL) |
| THA | The Hosiery Association |
| THA | The Highland Army |
| THA | Take Heart Alaska (coalition) |
| THA | Threat Hazard Assessment |
| THA | Tennessee Handicap Act |
| THA | The Hypnotherapy Association (UK) |
| THA | The Hamster Alliance (Los Angeles Music Studio) |
| THA | Hardware Address of the Target |
| THA | Task Hazard Analysis |
| THA | Total Hydrocarbon Analyzer |
| THA | Test Hazard Analysis |
| THA | The Headwear Association (Stockton, CA) |
| THA | Turbine Heat Acceptance |
| THA | Triaminoguanidinium Hydrazonium Azide |
| THA | Trinity House Authority |
| THA | Troop Holding Area |
| THA | Terminal Home Agent |