| Rank | Abbreviation | Meaning |
|---|
| ***** | ICCO | Information Collection Clearance Officer
| |
| ***** | ICCO | International Communications Consultancy Organisation
| |
| ***** | ICCO | International Carpet Classification Organization
| |
| ***** | ICCO | Interkerkelijke Organisatie voor Ontwikkelingssamenwerking
| |
| **** | ICCO | Injury Compensation Control Office
| |
| **** | ICCO | India Canada Cooperation Office
| |
| **** | ICCO | International Council of Containership Operators
| |
| **** | ICCO | Islamic Community Centre of Ontario
| |
| *** | ICCO | Islamic Culture and Communications Organization
| |
| *** | ICCO | International Cocoa Organization
| |
| *** | ICCO | Interchurch Organisation for Development Co-operation
| |
| *** | ICCO | International Cocoa Organisation
| |
| *** | ICCO | In Community Care for Orphans
| |
| *** | ICCO | Islamic Community Center of Ontario
| |
| *** | ICCO | International Consortium for Coaching in Organizations
| |
| ** | ICCO | Integrated Contract Contractor Order
| |
| ** | ICCO | Illinois Community Colleges Online
| |
| ** | ICCO | International Communication Consultancies Organization
| |
| ** | ICCO | International Communications Consultancy Organization
| |
| ** | ICCO | International Consumer Co Operative
| |
| ** | ICCO | International Committee for Chinese Orphans
| |
| * | ICCO | International Conference in Clinical Oncology
| |
| * | ICCO | Ipsilateral common carotid occlusion
| |
| * | ICCO | International Chinese Comrades Organization
| |
| * | ICCO | International Clinical Coaching Organization
| |