| ICMA | I Can Make Anything 
| Others |
| ICMA | Illinois Country Music Association
| Others |
| ICMA | Indian Classical Music and Arts
| Others |
| ICMA | Individual Case Management Association
| Others |
| ICMA | Institute of Certified Management Accountants
| Others |
| ICMA | Institute of Cost & Management Accountants
| Others |
| ICMA | Institute of Cost and Management Accountants
| Others |
| ICMA | Interactive Computer Marked Assessments
| Others |
| ICMA | Interactive Computer Marked Assignment
| Others |
| ICMA | International Capital Market Association
| Others |
| ICMA | International Capital Markets Association
| Others |
| ICMA | International Card Manufacturers Association
| Others |
| ICMA | International Cement Microscopt Association
| Others |
| ICMA | International Cement Microscopy Association
| Others |
| ICMA | International Center of Medieval Art
| Others |
| ICMA | International Christian Maritime Association
| Others |
| ICMA | International City Managers Association
| Others |
| ICMA | International City/County Management Association
| Others |
| ICMA | International Classical Music Awards
| Others |
| ICMA | International Classified Media Association
| Others |
| ICMA | International Commission on the Middle Atmosphere
| Others |
| ICMA | International Computer Music Association
| Others |
| ICMA | International Country Music Association
| Others |
| ICMA | International Cruise Management Agency
| Others |
| ICMA | Irish Chemical Marketers Association
| Others |