| Abbreviation | Definition |
|---|---|
| ICAC | Independent Commission Against Corruption |
| ICASA | Indian Cultural Advancement Society Australia |
| ICPA | Isolated Children's Parents' Association Of Australia |
| ICQA | International College of Queensland Australia |
| ICSM | Intergovernmental Committee on Survey and Mapping |
| IDCA | Islamic Dawah Centre of Australia |
| IDFA | Immune Deficiencies Foundation Australia |
| IDP | Indigenous Displaced Person |
| IETP | Indigenous Employment and Training Project |
| IFA | Individual Flexibility Arrangements |
| IFAM | Islamic Forum for Australian Muslims |
| IFBA | Insurance fraud Bureau of Australia |
| IFEA | Innovative Food Equipment Australia |
| IGA | Independant Grocers Of Australia |
| IHCA | Institute for Healthy Communities Australia |
| IIKA | International Institute of Kinesiology Australia |
| IILAH | Institute for International Law and the Humanities (University of Melbourne, Australia) |
| IKFA | Internal Kung Fu Australia |
| ILFA | International Lymphoedema Framework Australia |
| IMLA | Indigenous Ministry Links Australia |