| IACH | Indonesian Association of Clinical Hypnotherapist 
| Others |
| IACH | Institute for the Advancement of Community Health
| Others |
| IACH | Institute for the American Constitutional Heritage
| Others |
| IACH | Integrated Air Cargo Hub
| Others |
| IACH | International Academy of Classical Homeopathy
| Others |
| IACH | International Association of Clinical Hypnotherapy
| Others |
| IACH | International Association of Communication in Healthcare
| Others |
| IACH | International Association of Counseling Hypnotherapists
| Others |
| IACH | International Automated Clearing House
| Others |
| IACH | Ireland Army Community Hospital
| Others |
| IACH | Irwin Army Community Hospital
| Others |