| IHCA | Idaho Health Care Association 
| Others |
| IHCA | Illinois Health Care Association
| Others |
| IHCA | In Hospital Cardiac Arrest
| Others |
| IHCA | Indiana Health Care Association
| Others |
| IHCA | Infiniband Host Channel Adapter
| Others |
| IHCA | Institute for Healthy Communities Australia
| Others |
| IHCA | Interagency Hydrology Committee for Alaska
| Others |
| IHCA | International Hansa Class Association
| Others |
| IHCA | International Harvester Company of Australia
| Others |
| IHCA | International Hobie Class Association
| Others |
| IHCA | International Horn Competition of America
| Others |
| IHCA | Iowa Health Care Association
| Others |
| IHCA | Irish Hospital Consultants Association
| Others |
| IHCA | Issaquah Highlands Community Association
| Others |