| ICOA | Idaho Commission on Aging 
| Others |
| ICOA | Indiana Campground Owners Association
| Others |
| ICOA | Industry Council Open Amiga
| Others |
| ICOA | Informatica, Consulenza, Organizzazione Aziendale
| Others |
| ICOA | Interdisciplinary Center for Organizational Architecture
| Others |
| ICOA | Interdisciplinary Center on Aging
| Others |
| ICOA | Internal Carotid Ophthalmic Artery
| Others |
| ICOA | International Castor Oil Association
| Others |
| ICOA | International CBX Owners Association
| Others |
| ICOA | International Chamber Orchestra of America
| Others |
| ICOA | Internet Cafe Owners Association
| Others |