| Rank | Abbreviation | Meaning |
|---|
| ***** | HIIS | HEALTHCARE INTEGRATED INFORMATION SYSTEM
| |
| **** | HIIS | Heavy Ions in Space
| |
| **** | HIIS | Hardware Independent Imaging Solution
| |
| **** | HIIS | Health Insurance Information System
| |
| **** | HIIS | Health Information Integrated System
| |
| **** | HIIS | Hospital Intelligent Information System
| |
| **** | HIIS | Homeowners Insurance Inspection Services
| |
| **** | HIIS | Hospital Integrated Information System
| |
| **** | HIIS | Honeywell Institute for Information Science
| |
| *** | HIIS | Health Insurance Institute of Slovenia
| |
| *** | HIIS | Human Interfaces in Information Systems Laboratory
| |
| ** | HIIS | Housing Industry Information Services
| |