| ISHA | India Society of Health Administrators 
| Others |
| ISHA | Indian Society of Health Administration
| Others |
| ISHA | Indian Speech and Hearing Association
| Others |
| ISHA | Indiana Saddle Horse Association
| Others |
| ISHA | Inner Sense Healing Arts
| Others |
| ISHA | Institute of Spiritual Healing and Aromatherapy
| Others |
| ISHA | International School of Healing Arts
| Others |
| ISHA | International Skiing History Association
| Others |
| ISHA | International Society for Hip Arthroscopy
| Others |
| ISHA | International Society of Hotel Associations
| Others |
| ISHA | International Spelean Heritage Association
| Others |
| ISHA | International Sports Heritage Association
| Others |
| ISHA | International Students of History Association
| Others |
| ISHA | Iowa Stock Horse Association
| Others |
| ISHA | Islington and Shoreditch Housing Association
| Others |