| Acronym | Definition |
|---|
| HATS | Host Access Transformation Services |
| HATS | High Quality Digital Audio Transmission System |
| HATS | Head and Torso Simulator |
| HATS | Horiba Automotive Test Systems (various locations) |
| HATS | Helena Area Transit Service (Helena, MT) |
| HATS | Huntsville Association of Technical Societies |
| HATS | Host Access Transformation Service (IBM) |
| HATS | Harrisburg Area Transportation Study (Pennsylvania; est. 1965) |
| HATS | Humboldt Area Trans Support |
| HATS | Highly Accelerated Thermal Shock |
| HATS | Hardened Alternative Trailer System (various organizations) |
| HATS | Howard Area Transit Service |
| HATS | High Altitude Training Site (aviation training site located in Colorado) |
| HATS | Hanford Action Tracking System |
| HATS | Handheld Analog Test Set |
| HATS | Hardware Acceptance Test Specifications |
| HATS | Hybrid Automatic Test System |
| HATS | Health Alert Threat Summary |
| HATS | Hemoagglutination Treponema Test for Syphilis |
| HATS | Hacker Attempts Tracking System |
| HATS | Houston Area Technical Support - Interagency Law Enforcement Group |
| HATS | Hardened Tactical Shelter |