| Acronym | Definition |
|---|
| HASI➣Huygens Atmospheric Structure Instrument (spacecraft) |
| HASI➣Hubbard Association of Scientologists International |
| HASI➣Housing & Accommodation Support Initiative |
| HASI➣Helping All Students to Independence (Ohio) |
| HASI➣High Availability Storage Infrastructure (Linux) |
| HASI➣Hubbard Association of Scientologists International, Inc. |
| HASI➣Hughes Aircraft Systems International |