HAT
| Abbreviation | Meaning | Tamil Meaning | Category |
|---|---|---|---|
| HAT | Histone Acetyltransferase | - | Computer Acronyms(common) |
| HAT | Humid-air Turbine [cycle] | - | Computer Acronyms(common) |
| HAT | Highest Astronomical Tide (nautical Charts) -Hungarian Automated Telescope | - | Astronomy |
| HAT | Haitian Creole Language (ISO 639-2 Code) | - | Astronomy |