| Acronym | Definition |
|---|
| HISA➣Health Informatics Society of Australia |
| HISA➣Home Improvements and Structural Alterations (grants) |
| HISA➣Health Information Systems Architecture |
| HISA➣Human Interaction with Software Agents |
| HISA➣Hierarchical Intelligent Simulation Environment |
| HISA➣Headquarters & Installation Support Activity |