HASA
| Acronym | Definition |
|---|---|
| HASA | Hitachi Automotive Systems Americas, Inc. |
| HASA | Hitachi Amateur Sports Association (Japan) |
| HASA | Hawaii Amateur Surfing Association |
| HASA | Highly Accelerated Stress Audit |
| HASA | Henneth Annun Story Archive (moderated Lord of the Rings fanfiction) |
| HASA | Hearing & Speech Agency |
| HASA | Hillsborough Association of School Administrators (Florida, USA) |
| HASA | High Altitude SIGINT Architecture |
| HASA | Hopkins Association for Stroke Awareness (Johns Hopkins University; Baltimore, MD) |