Found 7 full forms for IHSA
| Term | Full Form | Category |
|---|---|---|
| IHSA | Idaho Head Start Association 
| Others |
| IHSA | Illinois High School Association
| Others |
| IHSA | Indiana Health Student Association
| Others |
| IHSA | Infrastructure Health and Safety Association
| Others |
| IHSA | Intercollegiate Horse Show Association
| Others |
| IHSA | Intercollegiate Horse Shows Association
| Others |
| IHSA | Iowa Horse Show Association
| Others |