| ICAC | Independent Commission Against Corruption 
| Others |
| ICAC | Independent Commissioner Against Corruption
| Others |
| ICAC | Indian Creek Aquatic Club
| Others |
| ICAC | Indiana Certified Addiction Counselor
| Others |
| ICAC | Indiana Collegiate Athletic Conference
| Others |
| ICAC | Inner City Asthma Consortium
| Others |
| ICAC | Inner-City Asthma Consortium
| Others |
| ICAC | Institute of Chartered Accountants of the Caribbean
| Others |
| ICAC | Institute Of Clean Air Companies
| Others |
| ICAC | Instituto de Contabilidad y Auditoria de Cuentas (Spain)
| Others |
| ICAC | Insurance Committee for Arson Control
| Others |
| ICAC | Interdisciplinary Child Advocacy Clinic
| Others |
| ICAC | Intergenerational Community Arts Council
| Others |
| ICAC | Intermountain Collegiate Athletic Conference
| Others |
| ICAC | International Certification Accreditation Council
| Others |
| ICAC | International Chiropractors Association of California
| Others |
| ICAC | International Commercial Arbitration Court
| Others |
| ICAC | International Conference on Autonomic Computing
| Others |
| ICAC | International Conformity Assessment Committee
| Others |
| ICAC | International Cotton Advisory Committee
| Others |
| ICAC | Internet Caucus Advisory Committee
| Others |
| ICAC | Internet Crimes Against Childern
| Others |
| ICAC | Internet Crimes Against Children
| Others |